Sinch Status

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 13, 2025 - 04:01 UTC

Scheduled - One of our downstream provider has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed MT/MO traffic towards the Canada - Bell.

Maintenance start time: 2025-11-13 04:00 UTC
Maintenance end time: 2025-11-13 10:00 UTC
Nov 13, 2025 04:00-10:00 UTC

External Maintenance - United States and Canada

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 13, 2025 - 04:00 UTC

Scheduled - Our Toll-Free number provider has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed Toll-Free MT/MO traffic towards the United States and Canada.

Impact MMS: Clients may experience delayed or failed Toll-Free MT/MO traffic towards the United States.

Maintenance start time: 2025-11-13 04:00 UTC
Maintenance end time: 2025-11-13 08:00 UTC
Nov 13, 2025 04:00-08:00 UTC

External Connectivity Under Maintenance

SMS - APAC Operational

SMS - EMEA Operational

SMS - LATAM Operational

SMS - CA - ShortCode Under Maintenance

SMS - CA - Toll Free Under Maintenance

SMS - US - ShortCode Operational

SMS - US - Toll Free Under Maintenance

SMS - US - 10DLC Operational

MMS - US Operational

MMS - US - Toll Free Under Maintenance

MMS - US - 10DLC Operational

MMS - AU Operational

MMS - APAC Operational

Voice Operational

Data Calling Operational

Phone Calling (PSTN) Operational

Video Calling Operational

SIP Trunk Operational

Conversation API Operational

Core Operational

WhatsApp Operational

SMS Operational

RCS Operational

MMS Operational

Messenger Operational

Instagram Operational

Viber Bot Operational

Viber Messaging Operational

Telegram Operational

Kakaotalk Operational

Line Operational

WeChat Operational

Apple Messages Operational

Omnichannel Connector Operational

Batch API Operational

Verification Operational

Flash Call Verification Operational

SMS Verification Operational

Verification Text to Speech Operational

Messaging APIs Operational

SMPP - US Operational

SMPP - EU Operational

SMPP - AU Operational

SMPP - CA Operational

SMPP - BR Operational

HTTP - US Operational

HTTP - EU Operational

HTTP - AU Operational

HTTP - CA Operational

HTTP - BR Operational

REST - US Operational

REST - EU Operational

REST - AU Operational

REST - CA Operational

REST - BR Operational

MMS - US Operational

MMS - AU Operational

MMS - CA Operational

RCS - US Operational

RCS - EU Operational

SPAN - US Operational

SMS Template Management API - US Operational

US Disconnect File Service - US Operational

🔗 EXTERNAL - Campaign Registry status - US Operational

sFTP2SMS - BR Operational

SMS Template Management API - EU Operational

Provisioning API Operational

Provisioning API Core Operational

WhatsApp Provisioning API Operational

Webhook Provisioning API Operational

Bundles Provisioning API Operational

KakaoTalk Provisioning API Operational

RCS Provisioning API Operational

Sinch DI Services Operational

MM4 (MMS 365) Operational

MM7 (MMS 365) Operational

Message Manager Operational

E-mail 365 Operational

SMS 365 Operator RoW Operational

SMS 365 Operator US Operational

International SMS 365 Operational

Lookup API Endpoints Operational

ENUM AU Operational

HTTP AU Operational

ENUM EU Operational

HTTP EU Operational

ENUM US Operational

HTTP US Operational

ENUM CA Operational

HTTP CA Operational

HTTP BR Operational

Contact Pro Operational

Contact Pro - AF (South Africa) Operational

Contact Pro - AU (Australia) Operational

Contact Pro - EU (Europe) Operational

Contact Pro - NA (North America) Operational

Migrated APIs Operational

Redhot XML (mBlox) Operational

E3 (Dialogue) Operational

SMS (Legacy Sinch) Operational

HTTP API (TWW) Operational

Numbers API Operational

Dashboard.sinch.com Operational

Payment Operational

SMS Administration Operational

Numbers Administration Operational

Analytics Operational

Customer Support Operational

2FA Operational

US Campaigns Operational

Campaigns Operational

Campaigns (France 🇫🇷) Operational

Campaigns API (France 🇫🇷) Operational

sFTP Connectors (France 🇫🇷) Operational

Campaigns (Europe 🇪🇺) Operational

Campaigns API (Europe 🇪🇺) Operational

sFTP Connectors (Europe 🇪🇺) Operational

Campaigns (North America 🇺🇸 / 🇨🇦) Operational

Campaigns API (North America 🇺🇸 / 🇨🇦) Operational

sFTP Connectors (North America 🇺🇸 / 🇨🇦) Operational

Elastic SIP Trunking Operational

API Operational

Inbound Calling Operational

Outbound Calling Operational

International Calling Operational

9-1-1 / Emergency Services Operational

User Interface Operational

Fax API Operational

API Operational

Inbound Faxing Operational

Outbound Faxing Operational

Notifications Operational

Fax to Email Operational

User Interface Operational

Sinch Engage Operational

The Hub Operational

Rest API Operational

Webhooks Operational

SMPP Operational

Sinch Engage Integrations Operational

Shopify Operational

Hubspot Operational

Netsuite Operational

Zoho CRM Operational

Big Commerce Operational

Salesforce Operational

Active Campaign Operational

Microsoft Dynamics Operational

Number Lookup API v2 (Beta) Operational

API Operational

User Interface Operational

Chatlayer Operational

Chatlayer Bot Engine - US Operational

Chatlayer Voice Engine - US Operational

Chatlayer App Integrations - US Operational

Chatlayer Bot Engine - EMEA Operational

Chatlayer Voice Engine - EMEA Operational

Chatlayer App Integrations - EMEA Operational

Chatlayer Bot Engine - South America Operational

Chatlayer Voice Engine - South America Operational

Chatlayer App Integrations - South America Operational

Chatlayer Bot Engine - India Operational

Chatlayer App Integrations - India Operational

Operational

Degraded Performance

Partial Outage

Major Outage

Maintenance

Scheduled Maintenance

External Maintenance - United States - Verizon Nov `13`, `2025` `05:00`-`10:00` UTC

Verizon - United States has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed Short Code and 10DLC MT/MO traffic towards Verizon-US

Maintenance start time: 2025-11-13 05:00 UTC
Maintenance end time: 2025-11-13 10:00 UTC
Posted on Nov 03, 2025 - 19:41 UTC

External Maintenance - United States - AT&T Nov `13`, `2025` `08:00`-`13:00` UTC

Impact: 10DLC and SC campaigns - Clients may experience delayed or failed Provisioning during this time.

Maintenance start time: 2025-11-13 08:00 UTC
Maintenance end time: 2025-11-13 13:00 UTC

Description:
AT&T will perform a maintenance on their side that will impact the 10DLC Provisioning API and SC-CMS Provisioning
Posted on Nov 12, 2025 - 00:29 UTC

Planned Maintenance - MMS Nov `13`, `2025` `08:00`-`11:00` UTC

Dear Client,

We are writing to inform you that as part of our continuous efforts to improve the performance and reliability of our platform, we will be performing a Maintenance on our MMS platform at the time specified below.

Type: Maintenance - MMS
Start Time: 2025-11-13 08:00 UTC
End Time: 2025-11-13 11:00 UTC

Impact MMS: Messages will be Queued and will be processed post upgrade. We expect intermittent delays during the maintenance window.

We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled, we will advise you accordingly.

Please contact support@sinch.com should you require further information or assistance.

Sincerely,
Sinch
Posted on Oct 16, 2025 - 16:11 UTC

External Maintenance - United States - T-Mobile Nov `14`, `2025` `04:00`-`13:00` UTC

T-Mobile US has scheduled a maintenance.

Impact SMS & MMS: Clients may experience delayed or failed Short Code and 10DLC MT/MO traffic towards T-Mobile US

Maintenance Start time: 2025-11-14 04:00 UTC
Maintenance End time: 2025-11-14 13:00 UTC
Posted on Nov 11, 2025 - 20:03 UTC

Sinch Contact Pro Certificate renewal - CUSTOMER ACTION REQUIRED - AU Nov `15`, `2025` `13:00`-`14:00` UTC

Dear Customer,

The Sinch Contact Pro certificate *.cc.sinch.com will be renewed on Saturday, November 15, 2025.

Start time: 2025-11-15 (Saturday) 1 PM UTC
End time: 2025-11-15 (Saturday) 2 PM UTC

During the maintenance window, all voice channels will experience a short disruption, up to 10 minutes.

Customer Action:
Although the certificate authority remains Sectigo, the issuer chain will change.
To avoid potential connection issues, Sinch strongly recommends verifying the certificate trust relationship in advance.

How to verify the certificate trust relationship:

1. Contact Pro UIs (e.g., Communication Panel):
Visit https://certificatetest.cc.sinch.com/, Ensure that no security warnings appear when connecting.

2. Integrations using cc.sinch.com (e.g., CRM integrations):
Check that your system trusts the issuer chain. You can also test connectivity using URL https://certificatetest.cc.sinch.com/ .

3. SIP trunks:
Review your configured trusted issuers to ensure the new certificate chain is accepted.

New certificate details:

CN = *.cc.sinch.com
Serial: 259647e441a89f63abf6f067a0cef5d6
Issuer: CN = Sectigo Public Server Authentication CA OV R36

CN = Sectigo Public Server Authentication CA OV R36
Serial: 2c1a3c76e943ddddff191b31890aed71
Issuer: Sectigo Public Server Authentication Root R46

CN = Sectigo Public Server Authentication Root R46
Serial: 758dfd8bae7c0700faa925a7e1c7ad14
Issuer: Sectigo Public Server Authentication Root R46

CN = USERTrust RSA Certification Authority
Serial: 01fd6d30fca3ca51a81bbc640e35032d
Issuer: USERTrust RSA Certification Authority

Certificates are available for download here:
https://clxgroup.sharepoint.com/:f:/s/EXTSinchSharing1/EiDPnCcA6CJLpPwjVP3sPHIBz4Ku7k_WOCnXUgXHJyf_UQ

For additional information or questions, please contact us via the Sinch Enterprise Support portal:
https://sinchenterprise.atlassian.net/servicedesk/customer/portal/1181

Best regards,
Sinch Contact Pro Team
Posted on Nov 07, 2025 - 13:17 UTC

Sinch Contact Pro Certificate renewal - CUSTOMER ACTION REQUIRED - EU Nov `16`, `2025` `05:00`-`06:00` UTC

Dear Customer,

The Sinch Contact Pro certificate *.cc.sinch.com will be renewed on Sunday, November 16, 2025.

Start time: 2025-11-16 (Sunday) 5 AM UTC
End time: 2025-11-16 (Sunday) 6 AM UTC

During the maintenance window, all voice channels will experience a short disruption, up to 10 minutes.

Customer Action:
Although the certificate authority remains Sectigo, the issuer chain will change.
To avoid potential connection issues, Sinch strongly recommends verifying the certificate trust relationship in advance.

How to verify the certificate trust relationship:

1. Contact Pro UIs (e.g., Communication Panel):
Visit https://certificatetest.cc.sinch.com/, Ensure that no security warnings appear when connecting.

2. Integrations using cc.sinch.com (e.g., CRM integrations):
Check that your system trusts the issuer chain. You can also test connectivity using URL https://certificatetest.cc.sinch.com/ .

3. SIP trunks:
Review your configured trusted issuers to ensure the new certificate chain is accepted.

New certificate details:

CN = *.cc.sinch.com
Serial: 259647e441a89f63abf6f067a0cef5d6
Issuer: CN = Sectigo Public Server Authentication CA OV R36

CN = Sectigo Public Server Authentication CA OV R36
Serial: 2c1a3c76e943ddddff191b31890aed71
Issuer: Sectigo Public Server Authentication Root R46

CN = Sectigo Public Server Authentication Root R46
Serial: 758dfd8bae7c0700faa925a7e1c7ad14
Issuer: Sectigo Public Server Authentication Root R46

CN = USERTrust RSA Certification Authority
Serial: 01fd6d30fca3ca51a81bbc640e35032d
Issuer: USERTrust RSA Certification Authority

Certificates are available for download here:
https://clxgroup.sharepoint.com/:f:/s/EXTSinchSharing1/EiDPnCcA6CJLpPwjVP3sPHIBz4Ku7k_WOCnXUgXHJyf_UQ

For additional information or questions, please contact us via the Sinch Enterprise Support portal:
https://sinchenterprise.atlassian.net/servicedesk/customer/portal/1181

Best regards,
Sinch Contact Pro Team
Posted on Nov 04, 2025 - 07:58 UTC

Sinch Contact Pro Certificate renewal - CUSTOMER ACTION REQUIRED - AF Nov `16`, `2025` `06:00`-`07:00` UTC

Dear Customer,

The Sinch Contact Pro certificate *.cc.sinch.com will be renewed on Sunday, November 16, 2025.

Start time: 2025-11-16 (Sunday) 6 AM UTC
End time: 2025-11-16 (Sunday) 7 AM UTC

During the maintenance window, all voice channels will experience a short disruption, up to 10 minutes.

Customer Action:
Although the certificate authority remains Sectigo, the issuer chain will change.
To avoid potential connection issues, Sinch strongly recommends verifying the certificate trust relationship in advance.

How to verify the certificate trust relationship:

1. Contact Pro UIs (e.g., Communication Panel):
Visit https://certificatetest.cc.sinch.com/, Ensure that no security warnings appear when connecting.

2. Integrations using cc.sinch.com (e.g., CRM integrations):
Check that your system trusts the issuer chain. You can also test connectivity using URL https://certificatetest.cc.sinch.com/ .

3. SIP trunks:
Review your configured trusted issuers to ensure the new certificate chain is accepted.

New certificate details:

CN = *.cc.sinch.com
Serial: 259647e441a89f63abf6f067a0cef5d6
Issuer: CN = Sectigo Public Server Authentication CA OV R36

CN = Sectigo Public Server Authentication CA OV R36
Serial: 2c1a3c76e943ddddff191b31890aed71
Issuer: Sectigo Public Server Authentication Root R46

CN = Sectigo Public Server Authentication Root R46
Serial: 758dfd8bae7c0700faa925a7e1c7ad14
Issuer: Sectigo Public Server Authentication Root R46

CN = USERTrust RSA Certification Authority
Serial: 01fd6d30fca3ca51a81bbc640e35032d
Issuer: USERTrust RSA Certification Authority

Certificates are available for download here:
https://clxgroup.sharepoint.com/:f:/s/EXTSinchSharing1/EiDPnCcA6CJLpPwjVP3sPHIBz4Ku7k_WOCnXUgXHJyf_UQ

For additional information or questions, please contact us via the Sinch Enterprise Support portal:
https://sinchenterprise.atlassian.net/servicedesk/customer/portal/1181

Best regards,
Sinch Contact Pro Team
Posted on Nov 04, 2025 - 07:57 UTC

Sinch Contact Pro Certificate renewal - CUSTOMER ACTION REQUIRED - NA Nov `16`, `2025` `07:00`-`08:00` UTC

Dear Customer,

The Sinch Contact Pro certificate *.cc.sinch.com will be renewed on Sunday, November 16, 2025.

Start time: 2025-11-16 (Sunday) 7 AM UTC
End time: 2025-11-16 (Sunday) 8 AM UTC

During the maintenance window, all voice channels will experience a short disruption, up to 10 minutes.

Customer Action:
Although the certificate authority remains Sectigo, the issuer chain will change.
To avoid potential connection issues, Sinch strongly recommends verifying the certificate trust relationship in advance.

How to verify the certificate trust relationship:

1. Contact Pro UIs (e.g., Communication Panel):
Visit https://certificatetest.cc.sinch.com/, Ensure that no security warnings appear when connecting.

2. Integrations using cc.sinch.com (e.g., CRM integrations):
Check that your system trusts the issuer chain. You can also test connectivity using URL https://certificatetest.cc.sinch.com/ .

3. SIP trunks:
Review your configured trusted issuers to ensure the new certificate chain is accepted.

New certificate details:

CN = *.cc.sinch.com
Serial: 259647e441a89f63abf6f067a0cef5d6
Issuer: CN = Sectigo Public Server Authentication CA OV R36

CN = Sectigo Public Server Authentication CA OV R36
Serial: 2c1a3c76e943ddddff191b31890aed71
Issuer: Sectigo Public Server Authentication Root R46

CN = Sectigo Public Server Authentication Root R46
Serial: 758dfd8bae7c0700faa925a7e1c7ad14
Issuer: Sectigo Public Server Authentication Root R46

CN = USERTrust RSA Certification Authority
Serial: 01fd6d30fca3ca51a81bbc640e35032d
Issuer: USERTrust RSA Certification Authority

Certificates are available for download here:
https://clxgroup.sharepoint.com/:f:/s/EXTSinchSharing1/EiDPnCcA6CJLpPwjVP3sPHIBz4Ku7k_WOCnXUgXHJyf_UQ

For additional information or questions, please contact us via the Sinch Enterprise Support portal:
https://sinchenterprise.atlassian.net/servicedesk/customer/portal/1181

Best regards,
Sinch Contact Pro Team
Posted on Nov 04, 2025 - 07:58 UTC

Scheduled Maintenance Report for Sinch Nov `16`, `2025` `20:00`-`23:00` UTC

An external supplier has scheduled a maintenance.

Impact : Customers may experience intermittent delays in receiving MO messages from the United States and Canada.

Maintenance start time: 2025-11-16 20:00 UTC
Maintenance end time: 2025-11-16 23:00 UTC

We appreciate your patience and apologize for any inconvenience experienced during this maintenance period.
If for any reason the maintenance is extended or cancelled, we will advise you accordingly.
Posted on Nov 11, 2025 - 12:02 UTC

External Maintenance - MMS Nov `16`, `2025` `20:00` - Nov `17`, `2025` `02:00` UTC

An external supplier has scheduled a maintenance.

Impact MMS: Customers may experience intermittent delays in sending and receiving MMS messages towards the United States and Canada.

Maintenance start time: 2025-11-16 20:00 UTC
Maintenance end time: 2025-11-17 02:00 UTC

We appreciate your patience and apologize for any inconvenience experienced during this maintenance period.
If for any reason the maintenance is extended or cancelled, we will advise you accordingly.
Posted on Nov 12, 2025 - 13:47 UTC

External Maintenance - MMS US and CA Nov `17`, `2025` `04:00` - Nov `19`, `2025` `10:00` UTC

An external supplier has scheduled a maintenance.

Impact MMS: Customers may experience intermittent delays in sending and receiving MMS messages towards the United States and Canada.

Maintenance start time: 2025-11-17 04:00 UTC
Maintenance end time: 2025-11-19 10:00 UTC

We appreciate your patience and apologize for any inconvenience experienced during this maintenance period.
If for any reason the maintenance is extended or cancelled, we will advise you accordingly.
Posted on Nov 03, 2025 - 21:18 UTC

Sinch Maintenance - SSL Certificate Renewal. Nov `17`, `2025` `09:00`-`12:00` UTC

Sinch will be performing a scheduled maintenance to renew the SSL certificate for the below endpoints.

eu.sms.api.sinch.com
eu1.sms.api.sinch.com
eu2.sms.api.sinch.com
us.sms.api.sinch.com
sms.api.sinch.com

Start Time: 2025-11-17 09:00 UTC
End Time: 2025-11-17 12:00 UTC

We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled we will advise you accordingly.

Download the certificate files for all the above mentioned certificates here:
https://clxgroup.sharepoint.com/:f:/s/CLX_Support_Anonymous_link/ElplaESCfVdHoW2yPZSk1uoBMlYJiLjcMSC8ttxEtqCCYA?e=8DSQ3l
Posted on Oct 31, 2025 - 13:09 UTC

External Maintenance - United States and Canada Nov `20`, `2025` `04:00`-`08:00` UTC

Our Toll-Free number provider has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed Toll-Free MT/MO traffic towards the United States and Canada.

Impact MMS: Clients may experience delayed or failed Toll-Free MT/MO traffic towards the United States.

Maintenance start time: 2025-11-20 04:00 UTC
Maintenance end time: 2025-11-20 08:00 UTC
Posted on Oct 04, 2025 - 03:04 UTC

External Maintenance - United States and Canada Nov `25`, `2025` `20:00` - Nov `26`, `2025` `00:00` UTC

Our Toll-Free number provider has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed Toll Free MT/MO traffic towards the United States and Canada.

Impact MMS: Clients may experience delayed or failed Toll Free MT/MO traffic towards the United States.

Maintenance start time: 2025-11-25 20:00 UTC
Maintenance end time: 2025-11-26 00:00 UTC
Posted on Oct 06, 2025 - 19:09 UTC

External Maintenance - Toll-Free Number Provider Dec `4`, `2025` `04:00`-`08:00` UTC

Our Toll-Free number provider has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed Toll Free MT/MO traffic towards the United States and Canada.
Impact MMS: Clients may experience delayed or failed Toll Free MT/MO traffic towards the United States.

Maintenance start time: 2025-12-04 04:00 UTC
Maintenance end time: 2025-12-04 08:00 UTC
Posted on Nov 08, 2025 - 05:26 UTC

Decommissioning of US3 site Dec `8`, `2025` `09:30`-`10:30` UTC

Dear Customer,

As a part of our continuous efforts to modernize and improve Sinch's platform performance, we are writing to inform you that we are decommissioning our US3 site.

Should you be utilizing any of the following US3 endpoints, we advise you to update these records to point to our US1 site for the respective service instead:

US3 endpoints:

us3.smpp.api.sinch.com
smpp-us3.clxcommunications.com
inbound01-ash1.clxnetworks.com
us3.httpsms.api.sinch.com
http-us3.clxcommunications.com
us3.httplookup.api.sinch.com
enum-us3.clxcommunications.com
209.95.131.8

US1 endpoints:

us1.smpp.api.sinch.com
us1.httpsms.api.sinch.com
us1.httplookup.api.sinch.com

Please take care to whitelist the following IP addresses to ensure DR&MO Flow: 54.92.160.84, 3.213.71.59, 23.22.91.120

Please contact support@sinch.com should you require further information or assistance.
Posted on Sep 12, 2025 - 13:38 UTC

External Maintenance - Toll-Free Number Provider Dec `11`, `2025` `04:00`-`08:00` UTC

Our Toll-Free number provider has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed Toll Free MT/MO traffic towards the United States and Canada.
Impact MMS: Clients may experience delayed or failed Toll Free MT/MO traffic towards the United States.

Maintenance start time: 2025-12-11 04:00 UTC
Maintenance end time: 2025-12-11 08:00 UTC
Posted on Nov 08, 2025 - 05:26 UTC

External Maintenance - Toll-Free Number Provider Dec `18`, `2025` `04:00`-`08:00` UTC

Our Toll-Free number provider has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed Toll Free MT/MO traffic towards the United States and Canada.
Impact MMS: Clients may experience delayed or failed Toll Free MT/MO traffic towards the United States.

Maintenance start time: 2025-12-18 04:00 UTC
Maintenance end time: 2025-12-18 08:00 UTC
Posted on Nov 08, 2025 - 05:26 UTC

Singapore Regulatory Compliance Maintenance - A2P SMS APIs - TLS 1.3 Requirement Apr `1`, `2026` `00:00`-`01:00` UTC

The Infocomm Media Development Authority (IMDA) of Singapore has mandated the use of TLS (Transport Layer Security) 1.3 for all API connections handling A2P SMS traffic, effective April 1, 2026.

To ensure compliance and prevent any possible service disruption, all customers sending SMS traffic to Singapore must update their systems to support TLS 1.3 before this deadline.

Sinch Platform Readiness:
Our commitment is to provide a secure and resilient infrastructure.
We have already enabled full TLS 1.3 support across our global A2P SMSC infrastructure. The final site, EU3 (IP 93.158.78.4), will be fully compliant to TLS 1.3 by end of February 2026, well ahead of the deadline.

Required Customer Action:
Verify Your Configuration: We strongly urge you to begin transitioning your systems to use TLS 1.3 for connections to Sinch immediately.

Compliance Deadline:
In accordance with IMDA requirements, connections using TLS 1.2 for traffic to Singapore should not be supported after April 1, 2026. To avoid any possible interruption of service to Singapore, you must complete your transition before this date.

Our team is ready to help ensure your transition is smooth and seamless.
Please do not hesitate to contact our customer support or account manager if you have any questions or require assistance.
Posted on Nov 04, 2025 - 12:48 UTC

Past Incidents

Nov 13, 2025

Unresolved incidents: External Maintenance - Canada - Bell, External Maintenance - United States and Canada.

Nov 12, 2025

External Maintenance - Singapore - Starhub

Completed - The scheduled maintenance has been completed.
Nov 12, 22:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 12, 16:00 UTC

Scheduled - Singapore - Starhub has scheduled a maintenance.

Impact: Possible Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts.

Maintenance start time: 2025-11-12 16:00 UTC
Maintenance end time: 2025-11-12 22:00 UTC
Nov 11, 18:25 UTC

External Maintenance - United States - T-Mobile

Completed - The scheduled maintenance has been completed.
Nov 12, 13:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 12, 07:00 UTC

Scheduled - T-Mobile US has scheduled a maintenance.

Impact SMS & MMS: Clients may experience delayed or failed Short Code and 10DLC MT/MO traffic towards T-Mobile US

Maintenance Start time: 2025-11-12 07:00 UTC
Maintenance End time: 2025-11-12 13:00 UTC
Nov 11, 00:02 UTC

Planned Maintenance - MMS

Completed - The scheduled maintenance has been completed.
Nov 12, 11:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 12, 08:00 UTC

Scheduled - Dear Client,

We are writing to inform you that as part of our continuous efforts to improve the performance and reliability of our platform, we will be performing a Maintenance on our MMS platform at the time specified below.

Type: Maintenance - MMS
Start Time: 2025-11-12 08:00 UTC
End Time: 2025-11-12 11:00 UTC

Impact MMS: Messages will be Queued and will be processed post upgrade. We expect intermittent delays during the maintenance window.

We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled, we will advise you accordingly.

Please contact support@sinch.com should you require further information or assistance.

Sincerely,
Sinch
Oct 16, 16:07 UTC

External Maintenance - United States - Verizon

Completed - The scheduled maintenance has been completed.
Nov 12, 10:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 12, 05:00 UTC

Scheduled - Verizon - United States has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed Short Code and 10DLC MT/MO traffic towards Verizon-US

Maintenance start time: 2025-11-12 05:00 UTC
Maintenance end time: 2025-11-12 10:00 UTC
Nov 3, 19:28 UTC

Delivery Issue Mexico - AT&T

Resolved - This incident has been resolved.

Incident Start Time: 2025-11-12 04:50 UTC
Incident End Time: 2025-11-12 07:20 UTC
Nov 12, 08:56 UTC

Monitoring - A fix has been implemented and we are monitoring the results.
Nov 12, 06:09 UTC

Investigating - We are currently observing delivery issues in Mexico - AT&T.

Incident Start Time: 2025-11-12 04:50 UTC

Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts

We will update as soon as we have more information.
Nov 12, 05:40 UTC

Chatlayer App-Integrations - Service Degradation

Resolved - This incident has been resolved.

Incident Start Time : 2025-11-07 13:00 UTC.

Incident End Time : 2025-11-11 10:00 UTC.
Nov 12, 06:08 UTC

Identified - We're currently experiencing issues with updating and uploading app-integrations across all environments.

Applications already deployed and running are not affected.

Our engineers are working on a fix which will be deployed early to mid-next week.

We sincerely apologize for any disruption this may cause and thank you for your understanding as we work toward a resolution.
Nov 7, 16:45 UTC

Delivery Issue Mexico - Izzi

Resolved - This incident has been resolved.

Incident Start Time: 2025-11-11 13:49 UTC

Incident End Time: 2025-11-11 22:45 UTC
Nov 12, 00:26 UTC

Update - We are continuing to investigate this issue.
Nov 11, 19:10 UTC

Update - We are continuing to investigate this issue.
Nov 11, 16:02 UTC

Investigating - We are currently observing delivery issues in Mexico - Izzi.

Incident Start Time: 2025-11-11 13:49 UTC

Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts

We will update as soon as we have more information.
Nov 11, 14:23 UTC

Nov 11, 2025

Sinch Engage - Contacts Degradation

Resolved - Dear client,

We are writing to inform you that we were experiencing a temporary service disruption impacting the Sinch Engage platform.

Incident Start Time: 2025-11-11 21:00 UTC

Incident End Time: 2025-11-11 22:46 UTC

Impact: Clients may have experienced issues managing contacts in their Sinch Engage account.
Nov 11, 23:07 UTC

Planned Maintenance - MMS

Completed - The scheduled maintenance has been completed.
Nov 11, 11:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 11, 08:00 UTC

Scheduled - Dear Client,

We are writing to inform you that as part of our continuous efforts to improve the performance and reliability of our platform, we will be performing a Maintenance on our MMS platform at the time specified below.

Type: Maintenance - MMS
Start Time: 2025-11-11 08:00 UTC
End Time: 2025-11-11 11:00 UTC

Impact MMS: Messages will be Queued and will be processed post upgrade. We expect intermittent delays during the maintenance window.

We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled, we will advise you accordingly.

Please contact support@sinch.com should you require further information or assistance.

Sincerely,
Sinch
Oct 16, 15:51 UTC

Delivery Issue Mexico - Izzi

Resolved - This incident has been resolved.

Incident Start Time: 2025-11-10 23:11 UTC
Incident Start Time: 2025-11-11 08:10 UTC
Nov 11, 10:09 UTC

Update - We are continuing to investigate this issue.
Nov 11, 05:04 UTC

Update - We are continuing to investigate this issue.
Nov 11, 02:08 UTC

Investigating - We are currently observing delivery issues in Mexico - Izzi.

Incident Start Time: 2025-11-10 23:11 UTC

Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts

We will update as soon as we have more information.
Nov 11, 00:28 UTC

External Maintenance - MMS US and CA

Completed - The scheduled maintenance has been completed.
Nov 11, 10:01 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 11, 04:00 UTC

Scheduled - An external supplier has scheduled a maintenance.

Impact MMS: Customers may experience intermittent delays in sending and receiving MMS messages towards the United States and Canada.

Maintenance start time: 2025-11-11 04:00 UTC
Maintenance end time: 2025-11-11 10:00 UTC

We appreciate your patience and apologize for any inconvenience experienced during this maintenance period.
If for any reason the maintenance is extended or cancelled, we will advise you accordingly.
Nov 3, 21:11 UTC

External Maintenance - United States - Verizon

Completed - The scheduled maintenance has been completed.
Nov 11, 10:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 11, 05:00 UTC

Scheduled - Verizon - United States has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed Short Code and 10DLC MT/MO traffic towards Verizon-US

Maintenance start time: 2025-11-11 05:00 UTC
Maintenance end time: 2025-11-11 10:00 UTC
Nov 3, 19:14 UTC

Delivery Issue Netherlands - Odido

Resolved - This incident has been resolved.

Incident Start Time: 2025-11-11 00:49 UTC
Incident End Time: 2025-11-11 02:04 UTC
Nov 11, 03:15 UTC

Investigating - We are currently observing delivery issues towards Odido - Netherlands

Incident Start Time: 2025-11-11 00:49 UTC

Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts

We will update as soon as we have more information.
Nov 11, 01:20 UTC

Nov 10, 2025

Campaigns Server Maintenance

Completed - Server maintenance is completed.
Campaigns APIs were unavailable between 22:04 UTC - 22:10 UTC
Nov 10, 21:26 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 10, 21:00 UTC

Scheduled - We scheduled a Technical Maintenance. Limited downtime on our API in France
Nov 10, 14:59 UTC

Planned Maintenance - MMS

Completed - The scheduled maintenance has been completed.
Nov 10, 11:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 10, 08:00 UTC

Scheduled - Dear Client,

We are writing to inform you that as part of our continuous efforts to improve the performance and reliability of our platform, we will be performing a Maintenance on our MMS platform at the time specified below.

Type: Maintenance - MMS
Start Time: 2025-11-10 08:00 UTC
End Time: 2025-11-10 11:00 UTC

Impact MMS: Messages will be Queued and will be processed post upgrade. We expect intermittent delays during the maintenance window.

We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled, we will advise you accordingly.

Please contact support@sinch.com should you require further information or assistance.

Sincerely,
Sinch
Oct 16, 15:44 UTC

Delivery Issue Australia - Telstra

Resolved - This incident has been resolved.

Incident Start Time: 2025-11-07 08:42 UTC

Incident End Time: 2025-11-10 03:57 UTC
Nov 10, 04:21 UTC

Monitoring - We have been experiencing delivery issues towards Australia - Telstra.

A fix has been implemented and we are monitoring the results.

Incident Start Time: 2025-11-07 08:42 UTC

Impact: Delayed/Expired MT's, Late delivery receipts
Nov 10, 03:25 UTC

Nov 9, 2025

Delivery Issue Brazil - Algar Telecom

Resolved - This incident has been resolved.

Incident Start Time: 2025-11-09 04:00 UTC
Incident End Time: 2025-11-09 13:30 UTC
Nov 9, 16:41 UTC

Update - We are continuing to investigate this issue.
Nov 9, 11:30 UTC

Update - We are continuing to investigate this issue.
Nov 9, 08:10 UTC

Investigating - We are currently observing delivery issues in Brazil - Algar Telecom.

Incident Start Time: 2025-11-09 04:00 UTC

Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts

We will update as soon as we have more information.
Nov 9, 05:20 UTC

Sinch Emergency Maintenance - US1 Firewall Upgrade

Completed - The scheduled maintenance has been completed.
Nov 9, 11:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 9, 08:00 UTC

Update - Dear Client,

We are rescheduling the previously mentioned maintenance on our US1 Firewall, please find the updated information below:

As part of our continuous efforts to improve the performance and reliability of our services, we will be performing an emergency upgrade on our US1 Firewall on the schedule below.

Type: Emergency Firewall Maintenance

Old Start Time: 2025-11-06 08:00 UTC
Old End Time: 2025-11-06 11:00 UTC

New Start Time: 2025-11-09 08:00 UTC
New End Time: 2025-11-09 11:00 UTC

Affected Site: US1 SMSC and MMSC

Impact:
Brief service interruption (up to 6 minutes) during failover for MMS and SMS over US1 SMSC
Services will resume automatically post-upgrade

During the maintenance period we recommend that you connect to our secondary SMSC US7:
us7.smpp.api.sinch.com
us7.httpsms.api.sinch.com
us7.httplookup.api.sinch.com

We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled we will advise you accordingly. Please contact support@sinch.com should you require further information or assistance.
Nov 5, 16:56 UTC

Scheduled - Dear Client,

We are reaching out to inform you that as part of our continuous efforts to improve the performance and reliability of our services, we will be performing an emergency upgrade on our US1 Firewall on the schedule below.

Type: Firewall Maintenance

Start Time: 2025-11-06 08:00 UTC
End Time: 2025-11-06 11:00 UTC

Affected Site: US1

Impact:
Brief service interruption (up to 6 minutes) during failover
Services resume automatically post-upgrade

During the maintenance period we recommend that you connect to our secondary site US7:
us7.smpp.api.sinch.com
us7.httpsms.api.sinch.com
us7.httplookup.api.sinch.com

We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled we will advise you accordingly. Please contact support@sinch.com should you require further information or assistance.
Nov 4, 14:18 UTC

Nov 8, 2025

No incidents reported.

Nov 7, 2025

Sinch Engage - Degradation

Resolved - This incident has been resolved.

Start Time : 2025-11-07 07:00 UTC

End Time : 2025-11-07 13:37 UTC
Nov 7, 14:25 UTC

Investigating - Dear client,

We are writing to inform you that we are experiencing a temporary service disruption impacting the Sinch Engage platform.
Some customers may encounter issues when trying to access the WhatsApp channel in the Hub.
Clicking on “See details” under the WhatsApp channel might result in 404 HTTP error.

https://eu.app.sinch.com/
https://hub.messagemedia.com/

We are currently working on resolving the issue.

Start Time (UTC): 2025-11-07 07:00 UTC

We apologize for the inconvenience and appreciate your patience while we are working to resolve the issue.
Nov 7, 12:46 UTC

Nov 6, 2025

Sinch FaxAPI - Incident - Fax Completions

Resolved - This incident has been resolved.

Incident Start Time: 2025-11-06 16:11 UTC
Incident End Time: 2025-11-06 16:55 UTC
Nov 6, 19:11 UTC

Monitoring - A fix has been implemented and we are monitoring the results.
Nov 6, 16:41 UTC

Investigating - Sinch is currently investigating reports of fax completion issues FaxAPI. Internal teams are actively engaged to resolve the issue. Updates will be provided as soon as possible.

We appreciate your patience and apologize for any inconvenience.
Nov 6, 16:23 UTC

Campaigns Application Maintenance

Completed - The scheduled maintenance has been completed.
Nov 6, 16:15 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 6, 15:15 UTC

Scheduled - UI improvements in the message composer for RCS carousel message.
Nov 6, 15:00 UTC

DI SMS 365 (SMSX) | Operator Services | Application, Database and System Maintenance | PCR Number #PCRSDI-12000

Completed - The scheduled maintenance has been completed.
Nov 6, 11:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 6, 07:00 UTC

Scheduled - Services :: DI SMS 365 (SMSX)
PCR Number :: PCRSDI-12000

Start Date and Time (GMT):: 06th November 2025 07:00 Hrs.
End Date and Time (GMT):: 06th November 2025 11:00 Hrs.

Impact
Mobile Terminating (MT) Traffic : Potential delay in delivery.
Mobile Originated (MO) Traffic : Potential delay in delivery.
DR Notification : Potential delay in delivery.
Report Manager Access : Not Impacted.
Report Manager Statistics : Not Impacted.

Description:
Digital Interconnect has scheduled a planned maintenance to carry out activities on the internal application and systems.

If you experience any issues during this maintenance , please contact the Operator Service NOC immediately at operatorservices.noc@sinch.com or +1 470.300.8394 (select ‘Support’ from the menu, option 2 for Digital Interconnect and then option 1) and reference this notification.
Nov 5, 00:31 UTC

DI SMS 365 (iSMS) | Operator Services | Application Maintenance | PCR Number #PCRSDI-12003

Completed - The scheduled maintenance has been completed.
Nov 6, 09:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 6, 05:00 UTC

Scheduled - Services :: DI SMS 365
PCR Number :: PCRSDI-12003

Start Date and Time (GMT):: 11/6/2025 5:00 Hrs.
End Date and Time (GMT):: 11/6/2025 9:00 Hrs.

Impact:
Mobile Terminating (MT) Traffic: Not Impacted.
Mobile Originated (MO) Traffic: Not Impacted.
DR Notification: Not Impacted.

Description:
Digital Interconnect has scheduled a planned maintenance to carry out activities on the internal applications.

If you experience any issues during this maintenance, please contact the Operator Service NOC immediately at operatorservices.noc@sinch.com or +1 470.300.8394 (select ‘Support’ from the menu, option 2 for Digital Interconnect and then option 1) and reference this notification.
Nov 3, 23:50 UTC

External Maintenance - United States and Canada

Completed - The scheduled maintenance has been completed.
Nov 6, 08:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 6, 04:00 UTC

Scheduled - Our Toll-Free number provider has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed Toll-Free MT/MO traffic towards the United States and Canada.

Impact MMS: Clients may experience delayed or failed Toll-Free MT/MO traffic towards the United States.

Maintenance start time: 2025-11-06 04:00 UTC
Maintenance end time: 2025-11-06 08:00 UTC
Oct 4, 03:03 UTC

Sinch Scheduled Maintenance - UK5 Network hub

Completed - The scheduled maintenance has been completed.
Nov 6, 05:01 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 6, 02:00 UTC

Scheduled - Dear Client,

We will be performing a schedule network maintenance at our UK5 Network hub.

Type: Schedule Network Maintenance
Affected site: UK5 Network hub
Impact: Some intermittent MT/MO delays towards France

Start time: 2025-11-06 02:00 (UTC)
End time: 2025-11-06 05:00 (UTC)

If for any reason the maintenance period is extended or cancelled we will advise you accordingly. And of course if you have any concerns please contact support@sinch.com.
Please accept our apologies for the inconvenience.

Best Regards,
The Sinch Team
Oct 21, 10:15 UTC

Service Degradation - Customer Dashboard

Resolved - This incident has been resolved.

Incident Start Time: 2025-11-05 17:10 UTC
Incident End Time: 2025-11-06 03:14 UTC
Nov 6, 04:16 UTC

Investigating - We are writing to inform you that we are currently facing a service degradation on the customer dashboard, Dashboard.sinch.com.

Impact: Analytics and Numbers Administration is degraded.

We will provide ongoing updates on this page.
Nov 6, 01:16 UTC

Nov 5, 2025

Campaigns Application Maintenance

Completed - The scheduled maintenance has been completed.
Nov 5, 15:10 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 5, 14:10 UTC

Scheduled - Fixes:
• Minor UI issue when the campaign list is empty
• Opt-out message match issue with customized stop word in US and EU platforms

Features:
• RCS carousel campaign duplication
• Stronger controls on carousel card management (add/delete)
• Old stats report end-of-life postponed to January
Nov 5, 13:59 UTC

DI SMS 365 (iSMS) | Operator Services | Application Maintenance | PCR Number #PCRSDI-11988

Completed - This activity is cancelled. We will update once the new dates are available for this activity.
Nov 5, 14:20 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 5, 12:30 UTC

Scheduled - Services :: DI SMS 365
PCR Number :: PCRSDI-11988

Start Date and Time (GMT):: 11/5/2025 12:30 Hrs.
End Date and Time (GMT):: 11/5/2025 16:30 Hrs.

Impact:
Mobile Terminating (MT) Traffic: Impacted.
Mobile Originated (MO) Traffic: Impacted.
DR Notification: Impacted.

Description:
Digital Interconnect has scheduled a planned maintenance to carry out activities on the internal applications.

If you experience any issues during this maintenance, please contact the Operator Service NOC immediately at operatorservices.noc@sinch.com or +1 470.300.8394 (select ‘Support’ from the menu, option 2 for Digital Interconnect and then option 1) and reference this notification.
Nov 5, 06:10 UTC

External Maintenance - United States - T-Mobile

Completed - The scheduled maintenance has been completed.
Nov 5, 12:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 5, 06:00 UTC

Scheduled - T-Mobile US has scheduled a maintenance.

Impact SMS & MMS: Clients may experience delayed or failed Short Code and 10DLC MT/MO traffic towards T-Mobile US

Maintenance Start time: 2025-11-05 06.00 UTC
Maintenance End time: 2025-11-05 12.00 UTC
Oct 31, 19:23 UTC

Nov 4, 2025

Platform Degradation - MMS

Resolved - This incident has been resolved.

Incident Start Time: 2025-11-04 13:05 UTC
Incident End Time: 2025-11-04 23:31 UTC
Nov 4, 23:51 UTC

Monitoring - A fix has been implemented and we are monitoring the results.
Nov 4, 19:13 UTC

Investigating - We are currently experiencing a platform degradation impacting MMS traffic.

Impact: Customers may observe delayed MMS for 10DLC, TFN and Short Codes.

Incident Start Time: 2025-11-04 13:05 UTC

We will provide further updates as soon as more information is available.
Nov 4, 17:05 UTC

External Maintenance - United States - AT&T

Completed - The scheduled maintenance has been completed.
Nov 4, 19:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 4, 16:00 UTC

Scheduled - Scheduled
External Maintenance - United States - AT&T

Impact: MMS, Clients may experience delayed or failed MMS traffic during this time.

Maintenance start time: 2025-11-04 16:00 UTC
Maintenance end time: 2025-11-04 19:00 UTC
Nov 3, 20:03 UTC

External Maintenance - Mexico - AT&T

Completed - The scheduled maintenance has been completed.
Nov 4, 12:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 4, 07:11 UTC

Scheduled - AT&T Mexico has scheduled a maintenance.
Impact: Possible interruption of SMS service and delays.

Maintenance start time: 2025-11-04 06:00 UTC
Maintenance end time: 2025-11-04 12:00 UTC

The notice for this maintenance was previously sent with incorrect timestamps in:
https://status.sinch.com/incidents/4m4dvrz0slpb

Please accept our sincerest apologies for any confusion caused by this.
Nov 4, 07:10 UTC

Planned Maintenance - MMS

Completed - The scheduled maintenance has been completed.
Nov 4, 10:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 4, 08:00 UTC

Scheduled - Dear Client,

We are writing to inform you that as part of our continuous efforts to improve the performance and reliability of our platform, we will be performing a Maintenance on our MMS platform at the time specified below.

Type: Maintenance - MMS
Start Time: 2025-11-04 08:00 UTC
End Time: 2025-11-04 10:00 UTC

Impact MMS: Messages will be Queued and will be processed post upgrade. We expect intermittent delays during the maintenance window.

We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled, we will advise you accordingly.

Please contact support@sinch.com should you require further information or assistance.

Sincerely,
Sinch
Oct 16, 15:42 UTC

DI SMS 365 (iSMS) | Operator Services | Application Maintenance | PCR Number #PCRSDI-12002

Completed - The scheduled maintenance has been completed.
Nov 4, 09:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 4, 05:00 UTC

Scheduled - Services :: DI SMS 365
PCR Number :: PCRSDI-12002

Start Date and Time (GMT):: 11/4/2025 5:00 Hrs.
End Date and Time (GMT):: 11/4/2025 9:00 Hrs.

Impact:
Mobile Terminating (MT) Traffic: Not Impacted.
Mobile Originated (MO) Traffic: Not Impacted.
DR Notification: Not Impacted.

Description:
Digital Interconnect has scheduled a planned maintenance to carry out activities on the internal applications.

If you experience any issues during this maintenance, please contact the Operator Service NOC immediately at operatorservices.noc@sinch.com or +1 470.300.8394 (select ‘Support’ from the menu, option 2 for Digital Interconnect and then option 1) and reference this notification.
Nov 3, 23:48 UTC

External Maintenance - United Kingdom

Completed - The scheduled maintenance has been completed.
Nov 4, 06:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 3, 21:00 UTC

Scheduled - One of our local providers toward the UK has scheduled a maintenance.
Impact: Possible Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts during the maintenance period

Maintenance start time: 2025-11-03 21:00 UTC
Maintenance end time: 2025-11-04 06:00 UTC
Oct 24, 11:29 UTC

Delivery Issue Mexico - Telefonica

Resolved - This incident has been resolved.

Incident Start Time: 2025-11-03 23:55 UTC

Incident End Time: 2025-11-04 01:28 UTC
Nov 4, 01:43 UTC

Investigating - We are currently observing delivery issues in Mexico - Telefonica.

Incident Start Time: 2025-11-03 23:55 UTC

Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts

We will update as soon as we have more information.
Nov 4, 00:16 UTC

External Maintenance - Mexico - AT&T

Completed - The scheduled maintenance has been completed.
Nov 4, 00:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 3, 18:00 UTC

Scheduled - AT&T - Mexico has scheduled a maintenance.

Impact: Possible interruption of SMS service and delays.

Maintenance start time: 2025-11-03 18:00 UTC
Maintenance end time: 2025-11-04 00:00 UTC
Nov 2, 19:08 UTC

Nov 3, 2025

PCRSDI-12003 || FRTIAPPA/2 pair from RHEL6.3 to RHEL7.9

Completed - Timings got updated. we are rescheduling it.
Nov 3, 23:46 UTC

Update - We will be undergoing scheduled maintenance during this time.
Nov 3, 22:48 UTC

DI SMS 365 (iSMS) | Operator Services | Application Maintenance | PCR Number #PCRSDI-12002

Completed - Timings got updated. we are rescheduling it.
Nov 3, 23:45 UTC

Update - We will be undergoing scheduled maintenance during this time.
Nov 3, 22:43 UTC

DI SMS 365 (iSMS) | Operator Services | Application Maintenance | PCR Number#PCRSDI-12004

Completed - The scheduled maintenance has been completed.
Nov 3, 18:30 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 3, 16:30 UTC

Scheduled - Services :: DI SMS 365
PCR Number:: PCRSDI-12004

Start Date and Time (GMT) :: Nov 3, 2025, 16:30 hrs
End Date and Time (GMT) :: Nov 3, 2025, 18:30 hrs

Impact
Mobile Terminating (MT) Traffic: Potential Impact
Mobile Originated (MO) Traffic: Potential Impact
DR Notification: Potential Impact

Description:
Digital Interconnect has scheduled a planned maintenance to carry out activities on the internal applications.

If you experience any issues during this maintenance, please contact the Operator Service NOC immediately at operatorservices.noc@sinch.com or +1 470.300.8394 (select 'support' from the menu, option 2 for Digital Interconnect and then option 1) and reference this notification
Oct 31, 21:30 UTC

Campaigns Application Maintenance

Completed - The scheduled maintenance has been completed.
Nov 3, 15:30 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 3, 14:30 UTC

Scheduled - Include card number in the RCS carousel interaction analytics.
Nov 3, 14:18 UTC

Campaigns Application Maintenance

Completed - The scheduled maintenance has been completed.
Nov 3, 14:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 3, 13:30 UTC

Scheduled - Technical update
Nov 3, 10:55 UTC

DI MMS 365 (MM7) | Operator Services | Application and System Maintenance | PCR Number #PCRSDI-11967

Completed - The scheduled maintenance has been completed.
Nov 3, 08:29 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 3, 06:00 UTC

Scheduled - Services :: DI MMS 365 (MM7)
PCR Number:: PCRSDI-11967

Start Date and Time (GMT) :: 03 November 2025 06:00 Hrs.
End Date and Time (GMT) :: 03 November 2025 11:00 Hrs.

Impact
Mobile Terminating (MT) Traffic: Potential Impact
Mobile Originated (MO) Traffic: Potential Impact
DR Notification: Potential Impact

Description:
Sinch Digital Interconnect has scheduled a planned maintenance to carry out activities on the internal applications and systems.

If you experience any issues during this maintenance, please contact the Operator Service NOC immediately at operatorservices.noc@sinch.com or +1 470.300.8394 (select 'support' from the menu, option 2 for Digital Interconnect and then option 1) and reference this notification
Oct 28, 07:35 UTC

Nov 2, 2025

No incidents reported.

Nov 1, 2025

DI Message Manager | Enterprise Services | Planned Maintenance

Completed - The scheduled maintenance has been completed.
Nov 1, 22:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 1, 18:00 UTC

Scheduled - We will be deploying 6.1.6 and OS patches on application servers as part of this activity.

Impact: Message Manager will be offline during the maintenance window. Customers are requested not to schedule any campaigns during this period.

If you experience any issues during this maintenance, please contact the Operator Service NOC immediately at operatorservices.noc@sinch.com or +1 470.300.8394 (select 'support' from the menu, option 2 for Digital Interconnect and then option 1) and reference this. If you have any questions or concerns, please contact your Account Manager.
Oct 16, 07:45 UTC

Oct 31, 2025

Service Degradation - US - 10DLC provisioning

Resolved - This incident has been resolved.

Incident Start time: 2025-10-28 01:00 UTC

Incident End Time: 2025-10-29 06:00 UTC
Oct 31, 22:37 UTC

Update - We are continuing to monitor for any further issues.
Oct 31, 21:01 UTC

Update - We are continuing to monitor for any further issues.
Oct 30, 18:12 UTC

Monitoring - A fix has been implemented and the failed provisioning attempts will be retried.

We will monitor for any further issues.
Oct 29, 15:08 UTC

Identified - The issue has been identified, and a fix has been scheduled to be implemented.

Start time: 2025-10-29 01:00 UTC
End time: 2025-10-29 03:00 UTC

Provisioning attempts that have failed during this degradation will be retried once the fix has been implemented.
Oct 28, 23:03 UTC

Update - We are continuing to investigate this issue.
Oct 28, 20:20 UTC

Update - We are continuing to investigate this issue.
Oct 28, 11:21 UTC

Update - We are continuing to investigate this issue.
Oct 28, 04:45 UTC

Update - We are continuing to investigate this issue.
Oct 28, 02:21 UTC

Investigating - Dear Client,

Sinch is currently experiencing intermittent issues with 10DLC provisioning and deprovisioning events towards one of our carrier partners.

If you experience issues with provisioning during this time, your transaction is being logged and will be addressed programmatically. We appreciate your understanding as we work towards a resolution with our carrier partner to resolve the situation.

We will update as soon as we have more information.
Oct 28, 01:03 UTC

Delivery Issue Australia - Vodafone

Resolved - This incident has been resolved.

Incident Start Time: 2025-10-30 03:25 UTC
Incident End Time: 2025-10-31 17:54 UTC
Oct 31, 19:05 UTC

Update - We are continuing to investigate this issue.
Oct 31, 16:02 UTC

Investigating - We are currently observing delivery issues in Australia - Vodafone.

Incident Start Time: 2025-10-30 03:25 UTC
Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts

We will update as soon as we have more information.
Oct 31, 12:18 UTC

Site EU3 - Degradation

Resolved - This incident has been resolved.

Incident Start Time: 2025-10-31 14:52 UTC
Incident End Time: 2025-10-31 17:15 UTC
Oct 31, 18:32 UTC

Update - We are continuing to investigate this issue.
Oct 31, 15:24 UTC

Investigating - We are currently experiencing a performance degradation issues on our EU3 site.

It is advised that clients connect to our redundant EU1 site for the duration of this issue.
Please contact support if you have any questions.

Clients can connect to our EU1 SMSC with the below FQDNs.
Alternative Endpoints:
eu1.smpp.api.sinch.com
eu1.httpsms.api.sinch.com
eu1.httplookup.api.sinch.com
Oct 31, 15:20 UTC

Campaigns Application Maintenance

Completed - The scheduled maintenance has been completed.
Oct 31, 14:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 31, 13:00 UTC

Scheduled - Improve API filter to get the list of campaigns. Improve documentation accordingly.
Oct 31, 11:34 UTC

External Maintenance - United States - T-Mobile

Completed - The scheduled maintenance has been completed.
Oct 31, 14:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 31, 04:00 UTC

Scheduled - T-Mobile US has scheduled a maintenance.

Impact SMS & MMS: Clients may experience delayed or failed Short Code and 10DLC MT/MO traffic towards T-Mobile US

Maintenance start time: 2025-10-31 04:00 UTC
Maintenance end time: 2025-10-31 14:00 UTC
Oct 25, 14:53 UTC

Delivery Issue Mexico - Altan Redes

Resolved - This incident has been resolved.

Incident Start Time: 2025-10-31 04:43 UTC
Incident End Time: 2025-10-31 08:29 UTC
Oct 31, 10:25 UTC

Update - We are continuing to investigate this issue.
Oct 31, 07:02 UTC

Investigating - We are currently observing delivery issues in Mexico - Altan Redes.

Incident Start Time: 2025-10-31 04:43 UTC

Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts

We will update as soon as we have more information.
Oct 31, 05:23 UTC

Sinch Engage - MT delivery issue

Resolved - This incident has been resolved.

Incident Start Time: 2025-10-30 03:14 UTC
Incident End Time: 2025-10-31 00:37 UTC
Oct 31, 04:44 UTC

Monitoring - A fix has been implemented and we are monitoring the results.
Oct 31, 01:02 UTC

Investigating - We are writing to inform you that we are currently facing a service degradation on the Sinch Engage platform, causing a small subset of MT messages to fail.

Impact: A small subset of MT messages may fail to deliver.
Oct 31, 00:02 UTC

Oct 30, 2025

MMS Degradation - AT&T United States

Resolved - This incident has been resolved.

Incident Start Time: 2025-10-29 15:49 UTC
Incident End Time: 2025-10-30 08:21 UTC
Oct 30, 18:16 UTC

Update - We are continuing to investigate this issue.
Oct 30, 05:52 UTC

Update - We are continuing to investigate this issue.
Oct 30, 01:11 UTC

Update - We are continuing to investigate this issue.
Oct 29, 19:33 UTC

Investigating - Dear Client,

We are writing to inform you that we are currently facing delays on our MMS platform.

Incident Start Time: 2025-10-29 15:49 UTC

Impact MMS: Delayed MTs/Delayed MOs/Missing delivery receipts/Late delivery receipts.

We appreciate your understanding, if you have any further questions or concerns please do not hesitate to reach out to support@sinch.com
Oct 29, 17:53 UTC

DI SMS 365 (SMSX) | Operator Services | Application and System Maintenance | PCR Number #PCRSDI-11997

Completed - The scheduled maintenance has been completed.
Oct 30, 18:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 30, 17:00 UTC

Scheduled - Services :: DI SMS 365
PCR Number :: PCRSDI-11997

Start Date and Time (GMT):: 30th October 17:00 Hrs.
End Date and Time (GMT):: 30th October 18:00 Hrs.

Impact:
Mobile Terminating (MT) Traffic: Not Impacted.
Mobile Originated (MO) Traffic: Not Impacted.
DR Notification: Not Impacted.

Description:
Digital Interconnect has scheduled a planned maintenance to carry out activities on the internal applications.

If you experience any issues during this maintenance, please contact the Operator Service NOC immediately at operatorservices.noc@sinch.com or +1 470.300.8394 (select ‘Support’ from the menu, option 2 for Digital Interconnect and then option 1) and reference this notification.
Oct 29, 22:15 UTC

Service Degradation - Customer Dashboard

Resolved - This incident has been resolved.

Incident Start Time: 2025-10-30 14:14 UTC
Incident End Time: 2025-10-30 15:29 UTC
Oct 30, 16:39 UTC

Monitoring - A fix has been implemented and we are monitoring the results.
Oct 30, 15:45 UTC

Investigating - We are writing to inform you that we are currently facing a service degradation on the customer dashboard, Dashboard.sinch.com.

Impact: Analytics and Numbers Administration is degraded.

Our engineers are currently working on resolving this issue as soon as possible.
We will provide ongoing updates on this page.
Oct 30, 15:23 UTC

DI SMS 365 (iSMS) | Operator Services | Application and System Maintenance | PCR Number #PCRSDI-11993

Completed - The scheduled maintenance has been completed.
Oct 30, 14:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 30, 09:01 UTC

Scheduled - Services :: DI SMS 365
PCR Number:: PCRSDI-11993

Start Date and Time (GMT) :: Oct 30, 2025, 09:00 hrs
End Date and Time (GMT) :: Oct 30, 2025, 14:00 hrs

Impact
Mobile Terminating (MT) Traffic: Potential Impact
Mobile Originated (MO) Traffic: Potential Impact
DR Notification: Potential Impact

Description:
Digital Interconnect has scheduled a planned maintenance to carry out activities on the internal applications and systems.

If you experience any issues during this maintenance, please contact the Operator Service NOC immediately at operatorservices.noc@sinch.com or +1 470.300.8394 (select 'support' from the menu, option 2 for Digital Interconnect and then option 1) and reference this notification
Oct 28, 19:32 UTC

Sinch Scheduled Maintenance - Elastic SIP Trunking - Software Release

Completed - The scheduled maintenance has been completed.
Oct 30, 13:30 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 30, 12:30 UTC

Scheduled - Sinch Elastic SIP Trunking will be deploying a software update to add additional features and functionality. The scheduled work is not expected to impact services. This is being sent as a courtesy notice in the event that you experience issues with your service during the maintenance window.

For information about our product enhancements, we encourage you subscribe to our Elastic SIP Trunking Release Notes posted in the Sinch Community at: https://community.sinch.com/
Oct 24, 18:54 UTC

External Maintenance - T-Mobile United States

Completed - The scheduled maintenance has been completed.
Oct 30, 12:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 30, 02:00 UTC

Scheduled - T-Mobile United States has scheduled a maintenance.

Impact SMS & MMS: Clients may experience delayed or failed Short Code and 10DLC MT/MO traffic towards T-Mobile US.

Maintenance start time: 2025-10-30 02:00 UTC
Maintenance end time: 2025-10-30 12:00 UTC
Oct 29, 07:58 UTC

Planned Maintenance - MMS

Completed - The scheduled maintenance has been completed.
Oct 30, 09:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 30, 08:00 UTC

Scheduled - Dear Client,

We are writing to inform you that as part of our continuous efforts to improve the performance and reliability of our platform, we will be performing a Maintenance on our MMS platform at the time specified below.

Type: Maintenance - MMS
Start Time: 2025-10-30 08:00 UTC
End Time: 2025-10-30 09:00 UTC

Impact MMS: Messages will be Queued and will be processed post upgrade. We expect intermittent delays during the maintenance window.

We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled, we will advise you accordingly.

Please contact support@sinch.com should you require further information or assistance.

Sincerely,
Sinch
Oct 16, 15:35 UTC

External Maintenance - United States and Canada

Completed - The scheduled maintenance has been completed.
Oct 30, 07:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 30, 03:00 UTC

Scheduled - Our Toll-Free number provider has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed Toll Free MT/MO traffic towards the United States and Canada.

Impact MMS: Clients may experience delayed or failed Toll Free MT/MO traffic towards the United States.

Maintenance start time: 2025-10-30 03:00 UTC
Maintenance end time: 2025-10-30 07:00 UTC
Sep 6, 02:09 UTC

Delivery Issue United States - Google Voice

Resolved - This incident has been resolved.

Incident Start Time: 2025-10-29 21:13 UTC
Incident End Time: 2025-10-30 00:37 UTC
Oct 30, 01:08 UTC

Update - We are continuing to investigate this issue.
Oct 29, 22:55 UTC

Investigating - We are currently observing delivery issues in United States - Google Voice.

Incident Start Time: 2025-10-29 21:13 UTC
Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts

We will update as soon as we have more information.
Oct 29, 21:26 UTC

Scheduled Maintenance

External Maintenance - United States - Verizon Nov 13, 2025 05:00-10:00 UTC

External Maintenance - United States - AT&T Nov 13, 2025 08:00-13:00 UTC

Planned Maintenance - MMS Nov 13, 2025 08:00-11:00 UTC

External Maintenance - United States - T-Mobile Nov 14, 2025 04:00-13:00 UTC

Sinch Contact Pro Certificate renewal - CUSTOMER ACTION REQUIRED - AU Nov 15, 2025 13:00-14:00 UTC

Sinch Contact Pro Certificate renewal - CUSTOMER ACTION REQUIRED - EU Nov 16, 2025 05:00-06:00 UTC

Sinch Contact Pro Certificate renewal - CUSTOMER ACTION REQUIRED - AF Nov 16, 2025 06:00-07:00 UTC

Sinch Contact Pro Certificate renewal - CUSTOMER ACTION REQUIRED - NA Nov 16, 2025 07:00-08:00 UTC

Scheduled Maintenance Report for Sinch Nov 16, 2025 20:00-23:00 UTC

External Maintenance - MMS Nov 16, 2025 20:00 - Nov 17, 2025 02:00 UTC

External Maintenance - MMS US and CA Nov 17, 2025 04:00 - Nov 19, 2025 10:00 UTC

Sinch Maintenance - SSL Certificate Renewal. Nov 17, 2025 09:00-12:00 UTC

External Maintenance - United States and Canada Nov 20, 2025 04:00-08:00 UTC

External Maintenance - United States and Canada Nov 25, 2025 20:00 - Nov 26, 2025 00:00 UTC

External Maintenance - Toll-Free Number Provider Dec 4, 2025 04:00-08:00 UTC

Decommissioning of US3 site Dec 8, 2025 09:30-10:30 UTC

External Maintenance - Toll-Free Number Provider Dec 11, 2025 04:00-08:00 UTC

External Maintenance - Toll-Free Number Provider Dec 18, 2025 04:00-08:00 UTC

Singapore Regulatory Compliance Maintenance - A2P SMS APIs - TLS 1.3 Requirement Apr 1, 2026 00:00-01:00 UTC

Past Incidents

External Maintenance - United States - Verizon Nov `13`, `2025` `05:00`-`10:00` UTC

External Maintenance - United States - AT&T Nov `13`, `2025` `08:00`-`13:00` UTC

Planned Maintenance - MMS Nov `13`, `2025` `08:00`-`11:00` UTC

External Maintenance - United States - T-Mobile Nov `14`, `2025` `04:00`-`13:00` UTC

Sinch Contact Pro Certificate renewal - CUSTOMER ACTION REQUIRED - AU Nov `15`, `2025` `13:00`-`14:00` UTC

Sinch Contact Pro Certificate renewal - CUSTOMER ACTION REQUIRED - EU Nov `16`, `2025` `05:00`-`06:00` UTC

Sinch Contact Pro Certificate renewal - CUSTOMER ACTION REQUIRED - AF Nov `16`, `2025` `06:00`-`07:00` UTC

Sinch Contact Pro Certificate renewal - CUSTOMER ACTION REQUIRED - NA Nov `16`, `2025` `07:00`-`08:00` UTC

Scheduled Maintenance Report for Sinch Nov `16`, `2025` `20:00`-`23:00` UTC

External Maintenance - MMS Nov `16`, `2025` `20:00` - Nov `17`, `2025` `02:00` UTC

External Maintenance - MMS US and CA Nov `17`, `2025` `04:00` - Nov `19`, `2025` `10:00` UTC

Sinch Maintenance - SSL Certificate Renewal. Nov `17`, `2025` `09:00`-`12:00` UTC

External Maintenance - United States and Canada Nov `20`, `2025` `04:00`-`08:00` UTC

External Maintenance - United States and Canada Nov `25`, `2025` `20:00` - Nov `26`, `2025` `00:00` UTC

External Maintenance - Toll-Free Number Provider Dec `4`, `2025` `04:00`-`08:00` UTC

Decommissioning of US3 site Dec `8`, `2025` `09:30`-`10:30` UTC

External Maintenance - Toll-Free Number Provider Dec `11`, `2025` `04:00`-`08:00` UTC

External Maintenance - Toll-Free Number Provider Dec `18`, `2025` `04:00`-`08:00` UTC

Singapore Regulatory Compliance Maintenance - A2P SMS APIs - TLS 1.3 Requirement Apr `1`, `2026` `00:00`-`01:00` UTC