All Systems Operational

External Connectivity Operational
SMS - APAC Operational
SMS - EMEA Operational
SMS - LATAM Operational
SMS - CA - ShortCode Operational
SMS - CA - Toll Free Operational
SMS - US - ShortCode Operational
SMS - US - Toll Free Operational
SMS - US - 10DLC Operational
MMS - US Operational
MMS - US - Toll Free Operational
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
Sinch Push Operational
Sinch Chat Operational
Template Management API Operational
Smart Conversations 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
TFN registration 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
SMS 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
Login/Sign up 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
Web Portal Operational
API, SMPP, webhooks, email to SMS Operational
Engage Classic (appengage.sinch.com) Operational
Messaging Connectivity Operational
Legacy Brands (MessageNet, DirectSMS, MobiPost, SMS Central, Wholesale SMS, Streetdata) 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 Operational
API Operational
Line Type Operational
RND - Reassigned Number Database Operational
Sim Swap 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
Functions & CLI Operational
API Operational
Assistant Operational
Customer Functions Operational
User Interface Operational
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance

Scheduled Maintenance

External Maintenance - United States - 10DLC Provider Oct 8, 2026 03:00-12:00 UTC

Our 10DLC Provider has scheduled a maintenance.
Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts

Maintenance start time: 2026-10-08 03:00 UTC
Maintenance end time: 2026-10-08 12:00 UTC
Posted on Oct 06, 2026 - 09:09 UTC

External Maintenance - United States and Canada Oct 8, 2026 03:00-07:00 UTC

An external supplier 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: 2026-10-08 03:00 UTC
Maintenance End Time: 2026-10-08 07:00 UTC
Posted on Sep 04, 2026 - 08:38 UTC

External Maintenance - US and Canada Oct 8, 2026 04:00-10:00 UTC

An external supplier has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed 10DLC MT/MO traffic towards the United States and Canada.
Impact MMS: Clients may experience delayed or failed 10DLC MT/MO traffic towards the United States.

Maintenance Start Time: 2026-10-08 04:00 UTC
Maintenance End Time: 2026-10-08 10:00 UTC
Posted on Sep 04, 2026 - 16:37 UTC

External Maintenance - United States and Canada Oct 13, 2026 03:00-10:00 UTC

An external supplier has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed 10DLC MT/MO traffic towards the United States and Canada.
Impact MMS: Clients may experience delayed or failed 10DLC MT/MO traffic towards the United States.

Maintenance start time: 2026-10-13 03:00 UTC
Maintenance end time: 2026-10-13 10:00 UTC
Posted on Sep 18, 2026 - 21:49 UTC

External Maintenance - US and Canada Oct 13, 2026 04:00-10:00 UTC

An external supplier has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed 10DLC MT/MO traffic towards the United States and Canada.
Impact MMS: Clients may experience delayed or failed 10DLC MT/MO traffic towards the United States.

Maintenance Start Time: 2026-10-13 04:00 UTC
Maintenance End Time: 2026-10-13 10:00 UTC
Posted on Sep 04, 2026 - 17:32 UTC

External Maintenance - US and Canada Oct 14, 2026 03:00-10:00 UTC

An external supplier has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed 10DLC MT/MO traffic towards the United States and Canada.
Impact MMS: Clients may experience delayed or failed 10DLC MT/MO traffic towards the United States.

Maintenance Start Time: 2026-10-14 03:00 UTC
Maintenance End Time: 2026-10-14 10:00 UTC
Posted on Sep 21, 2026 - 19:45 UTC

Sinch Internal Maintenance – Chatlayer Platform Oct 14, 2026 06:00-16:00 UTC

We'll be performing scheduled maintenance on our Chatlayer platform infrastructure to improve resource management and monitoring capabilities. No service impact is expected during this maintenance.

Maintenance windows per region (UTC):
EMEA: 06:00 – 07:00
Americas (US): 08:00 – 09:00
Americas (South America): 09:00 – 10:00
APAC (India): 15:00 – 16:00

Chatlayer is expected to remain fully operational throughout. We will update this page if anything changes.
Posted on Sep 22, 2026 - 18:39 UTC

External Maintenance - United States and Canada Oct 15, 2026 03:00-07:00 UTC

An external supplier 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: 2026-10-15 03:00 UTC
Maintenance End Time: 2026-10-15 07:00 UTC
Posted on Sep 04, 2026 - 08:44 UTC

External Maintenance - US and Canada Oct 15, 2026 04:00-10:00 UTC

An external supplier has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed 10DLC MT/MO traffic towards the United States and Canada.
Impact MMS: Clients may experience delayed or failed 10DLC MT/MO traffic towards the United States.

Maintenance Start Time: 2026-10-15 04:00 UTC
Maintenance End Time: 2026-10-15 10:00 UTC
Posted on Sep 04, 2026 - 17:20 UTC

Sinch Internal Maintenance - EU Network Infrastructure Oct 15, 2026 04:00-06:00 UTC

Update - We are writing to inform you that the concerned maintenance activity has been postponed to the below mentioned timeframe.

Type: Network Maintenance
Affected Site: EU

Previous Start Time: 2026-10-06 04:00 UTC
Previous End Time: 2026-10-06 06:00 UTC

New Start Time: 2026-10-15 04:00 UTC
New End Time: 2026-10-15 06:00 UTC

Impact: No expected impact.

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.
Oct 01, 2026 - 16:30 UTC
Scheduled - We are reaching out to inform you that a maintenance will be performed on our EU network infrastructure during the scheduled time window below.

Type: Network Maintenance
Affected Site: EU

Maintenance Start Time: 2026-10-06 04:00 UTC
Maintenance End Time: 2026-10-06 06:00 UTC

Impact: No expected impact.

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.
Sep 22, 2026 - 15:58 UTC

Planned Maintenance - XMS BR and CA Infrastructure Update Oct 15, 2026 07:00-08:00 UTC

We are writing to inform you that, as part of our continuous efforts to improve the performance, stability, and reliability of our platform, we will be performing scheduled maintenance on the XMS Traffic platform at the times specified below.

Type: Maintenance – XMS Infra updates

Start Time: 2026-10-15 07:00 UTC
End Time: 2026-10-15 08:00 UTC

Impact: XMS Traffic – BR, CA During the maintenance window, clients making GET requests may experience intermittent service interruptions, increased response times, or temporary request failures due to the infra update activities.

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.
Posted on Oct 01, 2026 - 12:47 UTC

Service Announcement & Maintenance: New SMSC Site & Whitelisting Requirements - US Region Oct 15, 2026 07:00-08:00 UTC

Update - We are writing to inform you that the concerned maintenance activity has been postponed to the below mentioned timeframe.

Type: Service Announcement & Maintenance

Previous Start Time: 2026-10-01 07:00 UTC
Previous End Time: 2026-10-01 08:00 UTC

New Start Time: 2026-10-15 07:00 UTC
New End Time: 2026-10-15 08:00 UTC

As part of our commitment to platform reliability, security, and scalability, Sinch is adding a brand-new, high-efficiency site to our core SMSC billing and messaging routing engine product. This site expansion introduces a next-generation, high-performance architecture to significantly increase our regional capacity, improve overall platform stability, and ensure robust message processing.

New Regional Connection Endpoints that are planned to go live 2026-10-15 during the aforementioned time window.

US SMPP: us6.smpp.api.sinch.com:
US HTTP SMS: us6.httpsms.api.sinch.com
US Lookup API: us6.httplookup.api.sinch.com

Action Required: Firewall Whitelisting

To ensure uninterrupted message delivery as we scale our traffic to include this new site we request that you update your firewall settings.

Affected API Endpoint:
(This change only affects customers connecting to either of the following US endpoints)

US SMPP: us1.smpp.api.sinch.com and/or us7.smpp.api.sinch.com
US HTTP SMS: us1.httpsms.api.sinch.com and/or us7.httpsms.api.sinch.com
US Lookup API: us1.httplookup.api.sinch.com and/or us7.httplookup.api.sinch.com

IP Addresses to Whitelist
Please coordinate with your network security team to whitelist these target IP addresses:

35.95.194.74
44.239.11.143
52.32.122.205

If for any reason the maintenance is extended, cancelled, or postponed, we will advise you accordingly.

Please contact support@sinch.com should you require further information or assistance.
Sep 24, 2026 - 17:58 UTC
Scheduled - As part of our commitment to platform reliability, security, and scalability, Sinch is adding a brand-new, high-efficiency site to our core SMSC billing and messaging routing engine product. This site expansion introduces a next-generation, high-performance architecture to significantly increase our regional capacity, improve overall platform stability, and ensure robust message processing.

New Regional Connection Endpoints that are planned to go live 2026-10-01 during the target window:

US SMPP: us6.smpp.api.sinch.com:
US HTTP SMS: us6.httpsms.api.sinch.com
US Lookup API: us6.httplookup.api.sinch.com

Type: Service Announcement & Maintenance
Maintenance start time: 2026-10-01 07:00 UTC
Maintenance end time: 2026-10-01 08:00 UTC

Action Required: Firewall Whitelisting

To ensure uninterrupted message delivery as we scale our traffic to include this new site we request that you update your firewall settings.

Affected API Endpoint:
(This change only affects customers connecting to either of the following US endpoints)

US SMPP: us1.smpp.api.sinch.com and/or us7.smpp.api.sinch.com
US HTTP SMS: us1.httpsms.api.sinch.com and/or us7.httpsms.api.sinch.com
US Lookup API: us1.httplookup.api.sinch.com and/or us7.httplookup.api.sinch.com

IP Addresses to Whitelist
Please coordinate with your network security team to whitelist these target IP addresses:

35.95.194.74
44.239.11.143
52.32.122.205

If for any reason the maintenance is extended, cancelled, or postponed, we will advise you accordingly.

Please contact support@sinch.com should you require further information or assistance.
Jul 10, 2026 - 08:37 UTC

Planned Maintenance - XMS AU Infrastructure Update Oct 15, 2026 11:00-12:00 UTC

Update - We will be undergoing scheduled maintenance during this time.
Oct 01, 2026 - 12:38 UTC
Scheduled - We are writing to inform you that, as part of our continuous efforts to improve the performance, stability, and reliability of our platform, we will be performing scheduled maintenance on the XMS Traffic platform at the times specified below.

Type: Maintenance – XMS Infra updates

Start Time: 2026-10-15 11:00 UTC
End Time: 2026-10-15 12:00 UTC

Impact: XMS Traffic – AU During the maintenance window, clients making GET requests may experience intermittent service interruptions, increased response times, or temporary request failures due to the infra update activities.

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.
Oct 01, 2026 - 12:32 UTC

Sinch Contact Pro Quarterly Maintenance - AU Oct 17, 2026 10:00 - Oct 18, 2026 16:00 UTC

Dear Customer,

We will be performing Contact Pro version upgrade as follows.

Start time: 2026-10-17 (Saturday) 10 AM UTC
End time: 2026-10-18 (Sunday) 4 PM UTC

Version upgrade will require max. 30 minutes downtime to all channels and user interfaces.
This will take place at some point during the maintenace window.

What´s new documentation regarding the upcoming 26Q4 release can be accessed from:
https://docs.cc.sinch.com/cloud/whats-new/en/index.html

For more details or questions related to the maintenance you can contact us via a support ticket:
https://sinchenterprise.atlassian.net/servicedesk/customer/portal/1181

Best Regards,
Sinch Contact Pro team
Posted on Oct 06, 2026 - 09:12 UTC

Sinch Contact Pro Quarterly Maintenance - AF Oct 17, 2026 16:00 - Oct 18, 2026 22:00 UTC

Dear Customer,

We will be performing Contact Pro version upgrade as follows.

Start time: 2026-10-17 (Saturday) 4 PM UTC
End time: 2026-10-18 (Sunday) 10 PM UTC

Version upgrade will require max. 30 minutes downtime to all channels and user interfaces.
This will take place at some point during the maintenace window.

What´s new documentation regarding the upcoming 26Q4 release can be accessed from:
https://docs.cc.sinch.com/cloud/whats-new/en/index.html

For more details or questions related to the maintenance you can contact us via a support ticket:
https://sinchenterprise.atlassian.net/servicedesk/customer/portal/1181

Best Regards,
Sinch Contact Pro team
Posted on Oct 06, 2026 - 09:11 UTC

Sinch Contact Pro Quarterly Maintenance - EU Oct 17, 2026 16:00 - Oct 18, 2026 22:00 UTC

Dear Customer,

We will be performing Contact Pro version upgrade as follows.

Start time: 2026-10-17 (Saturday) 4 PM UTC
End time: 2026-10-18 (Sunday) 10 PM UTC

Version upgrade will require max. 30 minutes downtime to all channels and user interfaces.
This will take place at some point during the maintenace window.

What´s new documentation regarding the upcoming 26Q4 release can be accessed from:
https://docs.cc.sinch.com/cloud/whats-new/en/index.html

For more details or questions related to the maintenance you can contact us via a support ticket:
https://sinchenterprise.atlassian.net/servicedesk/customer/portal/1181

Best Regards,
Sinch Contact Pro team
Posted on Oct 06, 2026 - 09:12 UTC

Sinch Contact Pro Quarterly Maintenance - Americas Oct 18, 2026 01:00 - Oct 19, 2026 07:00 UTC

Dear Customer,

We will be performing Contact Pro maintenance and version upgrade as follows.

Start time: 2026-10-18 (Sunday) 1 AM UTC
End time: 2026-10-19 (Monday) 7 AM UTC

Version upgrade will require max. 30 minutes downtime to all channels and user interfaces.
This will take place at some point during the maintenace window.

What´s new documentation regarding the upcoming 26Q4 release can be accessed from:
https://docs.cc.sinch.com/cloud/whats-new/en/index.html

For more details or questions related to the maintenance you can contact us via a support ticket:
https://sinchenterprise.atlassian.net/servicedesk/customer/portal/1181

Best Regards,
Sinch Contact Pro team
Posted on Oct 06, 2026 - 09:13 UTC

Sinch Maintenance - SSL Certificate Renewal Oct 20, 2026 07:00-10:00 UTC

Sinch will be performing a scheduled maintenance to renew the SSL certificate's.

Type: Scheduled Maintenance
Maintenance: SSL Certificate Updates

Start Time: 2026-10-20 07:00 UTC
End Time: 2026-10-20 10:00 UTC

Impact: sms.api.sinch.com, us.sms.api.sinch.com, eu1.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.

As part of this update, please note that the root certificates have also changed. We recommend updating the root certificates as well to ensure continued trust and smooth operation.

Download the certificate files for all the above mentioned certificates here:https://clxgroup.sharepoint.com/:f:/s/CLX_Support_Anonymous_link/IgALRDsM8tADTai40OEYnKelASGNnSO-pEEyNQaCDUec0pQ
Posted on Oct 06, 2026 - 10:55 UTC

External Maintenance - United States and Canada Oct 22, 2026 03:00-07:00 UTC

An external supplier 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: 2026-10-22 03:00 UTC
Maintenance End Time: 2026-10-22 07:00 UTC
Posted on Sep 04, 2026 - 08:49 UTC

External Maintenance - United States and Canada Oct 29, 2026 03:00-07:00 UTC

An external supplier 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: 2026-10-29 03:00 UTC
Maintenance End Time: 2026-10-29 07:00 UTC
Posted on Sep 04, 2026 - 08:53 UTC

External Maintenance - US and Canada Nov 19, 2026 05:00-11:00 UTC

An external supplier has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed 10DLC MT/MO traffic towards the United States and Canada.
Impact MMS: Clients may experience delayed or failed 10DLC MT/MO traffic towards the United States.

Maintenance Start Time: 2026-11-19 05:00 UTC
Maintenance End Time: 2026-11-19 11:00 UTC
Posted on Oct 01, 2026 - 03:17 UTC

Oct 6, 2026

Delivery Issue Panama - Tigo
Resolved - This incident has been resolved.

Incident Start Time: 2026-10-06 17:37 UTC
Incident End Time: 2026-10-06 18:16 UTC
Oct 6, 19:21 UTC
Investigating - We are currently observing delivery issues in Panama - Tigo

Incident Start Time: 2026-10-06 17:37 UTC

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

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.
Oct 6, 18:07 UTC
Delivery Issue Nicaragua - Tigo
Resolved - This incident has been resolved.

Incident Start Time: 2026-10-06 17:37 UTC
Incident End Time: 2026-10-06 18:14 UTC
Oct 6, 19:17 UTC
Investigating - We are currently observing delivery issues in Nicaragua - Tigo

Incident Start Time: 2026-10-06 17:37 UTC

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

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.
Oct 6, 18:01 UTC
Emergency Maintenance - Legacy API Service Enhancement
Completed - Dear Client,

We are writing to inform you that the previously scheduled maintenance has been cancelled.

Original Start Time: 2026-10-07 07:00 UTC
Original End Time: 2026-10-07 13:00 UTC

A new notice will be sent when this maintenance is rescheduled.
If you have any questions, please contact support@sinch.com.
Oct 6, 15:10 UTC
Scheduled - In our continuous efforts to ensure high capacity and service quality, Sinch is adding another backend service for our legacy API’s.

Maintenance Start Time: 2026-10-07 07:00 UTC
Maintenance End Time: 2026-10-07 13:00 UTC

Impact: Some customers may experience delay in MT traffic.
Oct 2, 20:21 UTC
Delivery Issue French Guiana - Digicel
Resolved - This incident has been resolved.

Incident Start Time: 2026-10-06 13:41 UTC
Incident End Time: 2026-10-06 14:08 UTC
Oct 6, 14:41 UTC
Investigating - We are currently observing delivery issues in French Guiana - Digicel

Incident Start Time: 2026-10-06 13:41 UTC

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

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.
Oct 6, 13:58 UTC
DI SMS 365 (SMSX) | Operator Services | Application Maintenance | PCR Number #PCRSDI-12365
Completed - The scheduled maintenance has been completed.
Oct 6, 10:01 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 6, 06:00 UTC
Scheduled - Services: DI SMS 365 (SMSX)
PCR Number: PCRSDI-12365

Start Date and Time (GMT) :: 6th October 2026 6:00 Hrs.
End Date and Time (GMT) :: 6th October 2026 10:00 Hrs.

Impact
Mobile Terminating (MT) Traffic: No impact expected.
Mobile Originated (MO) Traffic: No impact expected.
NRS Lookup: Potential latency for NRS Lookups

Description:
Sinch Digital Interconnect has scheduled a planned maintenance to carry out activities on the internal applications; no impact is expected during this activity.

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.
Sep 30, 20:26 UTC
External Maintenance - US and Canada
Completed - The scheduled maintenance has been completed.
Oct 6, 10:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 6, 04:00 UTC
Scheduled - An external supplier has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed 10DLC MT/MO traffic towards the United States and Canada.
Impact MMS: Clients may experience delayed or failed 10DLC MT/MO traffic towards the United States.

Maintenance Start Time: 2026-10-06 04:00 UTC
Maintenance End Time: 2026-10-06 10:00 UTC
Sep 4, 16:04 UTC
Post-Incident Notification - Delivery Issue Sweden - Tele2Comviq
Resolved - We experienced an issue with sending towards Tele2Comviq - Sweden.

Impact: Customers may have experienced Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts.

Incident Start Time: 2026-10-06 06:59:00 UTC
Incident End Time: 2026-10-06 07:07:00 UTC

If you have any questions, please contact support@sinch.com
Oct 6, 06:59 UTC

Oct 5, 2026

Sinch Internal Maintenance - IN1 Network Infrastructure
Completed - The scheduled maintenance has been completed.
Oct 5, 21:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 5, 19:00 UTC
Scheduled - Dear Client,

We are reaching out to inform you that a maintenance will be performed on our IN1 network infrastructure during the scheduled time window below.

Type: Network Maintenance
Affected Site: IN1

Maintenance Start Time: 2026-10-05 19:00 UTC
Maintenance End Time: 2026-10-05 21:00 UTC

Impact: No expected impact.

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.
Sep 21, 19:27 UTC
DI SMS 365 (SMSX) | Operator Services | Application Maintenance | PCR Number #PCRSDI-12354
Completed - The scheduled maintenance has been completed.
Oct 5, 10:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 5, 06:00 UTC
Scheduled - Services: DI SMS 365 (SMSX)
PCR Number: PCRSDI-12354

Start Date and Time (GMT) :: 5th October 2026 6:00 Hrs.
End Date and Time (GMT) :: 5th October 2026 10:00 Hrs.

Impact
Mobile Terminating (MT) Traffic: No impact expected.
Mobile Originated (MO) Traffic: No impact expected.
NRS Lookup: Potential latency for NRS Lookups

Description:
Sinch Digital Interconnect has scheduled a planned maintenance to carry out activities on the internal applications; no impact is expected during this activity.

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.
Sep 30, 20:24 UTC
Campaigns Application Maintenance
Completed - The scheduled maintenance has been completed.
Oct 5, 09:30 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 5, 08:30 UTC
Scheduled - Application maintenance
Oct 5, 08:27 UTC

Oct 4, 2026

Delivery Issue New Zealand - OneNZ
Resolved - This incident has been resolved.

Incident Start Time: 2026-10-04 11:06 UTC
Incident End Time: 2026-10-04 13:08 UTC
Oct 4, 15:06 UTC
Investigating - We are currently observing delivery issues New Zealand - OneNZ

Incident Start Time: 2026-10-04 11:06 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 4, 11:47 UTC
Delivery Issue Brazil - Vivo
Resolved - This incident has been resolved.

Incident Start Time: 2026-10-04 04:10 UTC
Incident End Time: 2026-10-04 11:13 UTC
Oct 4, 12:16 UTC
Update - We are continuing to investigate this issue.
Oct 4, 11:29 UTC
Update - We are continuing to investigate this issue.
Oct 4, 08:03 UTC
Investigating - We are currently observing delivery issues in Brazil - Vivo

Incident Start Time: 2026-10-04 04:10 UTC

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

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.
Oct 4, 06:09 UTC

Oct 3, 2026

Planned Maintenance - Message Manager
Completed - The scheduled maintenance has been completed.
Oct 3, 22:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 3, 18:00 UTC
Scheduled - A planned maintenance activity is scheduled for Message Manager.
Customers are advised not to schedule any campaigns during this maintenance window.

Maintenance Start Time: 2026-10-03 18:00 UTC
Maintenance End Time: 2026-10-03 22:00 UTC

Impact
The Message Manager UI will be unavailable during the application upgrade.

If you experience any issues during this maintenance window, 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, then option 1).

Please reference this maintenance notification when contacting support.

If you have any questions or concerns, please contact your Account Manager.
Sep 18, 04:10 UTC

Oct 2, 2026

Calling Degradation - PSTN
Resolved - We want to inform you that we experienced a performance degradation impacting our Calling service.

Incident Start Time: 2026-10-02 05:51 UTC
Incident End Time: 2026-10-02 09:05 UTC

Impact: Customers may have experienced failed attempts when making PSTN outbound calls.

We sincerely apologize for any inconvenience this may have caused and appreciate your understanding while we worked to resolve the issue.

For further information or assistance, please contact us at support@sinch.com.
Oct 2, 06:00 UTC

Oct 1, 2026

Service Degradation - 10DLC Campaign Provisioning
Resolved - This incident has been resolved.

Incident Start Time: 2026-10-01 14:29 UTC

Incident End Time: 2026-10-01 18:12 UTC
Oct 1, 18:51 UTC
Investigating - We are currently experiencing a service degradation affecting 10DLC campaign provisioning.

Impact: Clients may experience intermittent issues, including delays or failures, when provisioning 10DLC campaigns.

Incident Start Time: 2026-10-01 14:29 UTC

We are actively investigating and will provide further updates as more information becomes available.
For any inquiries, please contact us at support@sinch.com.
Oct 1, 16:36 UTC
Sinch Internal Maintenance - US2 Network Infrastructure
Completed - The scheduled maintenance has been completed.
Oct 1, 11:01 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 1, 08:00 UTC
Update - Dear Client,

We are writing to inform you that the concerned maintenance activity has been rescheduled to the time window below:

Previous Start Time: 2026-09-10 04:00 UTC
Previous End Time: 2026-09-10 07:00 UTC

New Start Time: 2026-10-01 08:00 UTC
New End Time: 2026-10-01 11:00 UTC

Impact: No expected impact.

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.
Sep 9, 19:38 UTC
Update - Dear Client,

We are writing to inform you that the concerned maintenance activity has been rescheduled to the time window below:

Previous Start Time: 2026-09-10 07:00 UTC
Previous End Time: 2026-09-10 09:00 UTC

New Start Time: 2026-09-10 04:00 UTC
New End Time: 2026-09-10 07:00 UTC

Impact: No expected impact.

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.
Sep 1, 15:16 UTC
Scheduled - Dear Client,

We are reaching out to inform you that a maintenance will be performed on our US2 network infrastructure during the scheduled time window below.

Type: Network Maintenance
Affected Site: US2

Maintenance Start Time: 2026-09-10 07:00 UTC
Maintenance End Time: 2026-09-10 09:00 UTC

Impact: No expected impact.

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.
Aug 27, 16:52 UTC
Sinch Internal Maintenance - US1 Network Infrastructure
Completed - The scheduled maintenance has been completed.
Oct 1, 11:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 1, 08:01 UTC
Scheduled - We will be performing a scheduled Network maintenance, which will result in intermittent delays or failures to various countries.

Type: Network Maintenance
Affected Site: US1 Network Hub

Impact: Clients may experience intermittent delayed/failed MT and MO traffic to and from the following countries.
Bolivia
Brazil
Canada
Chile
Costa Rica
Guatemala
Paraguay
Peru
Puerto Rico
USA
Uruguay

Start time: 2026-10-01 08:00 UTC
End time: 2026-10-01 11:00 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.
Sep 18, 14:03 UTC
Post-Incident Notification - RTCx Services - US
Resolved - We experienced an issue causing degradation for RTCx services in the US region.

The issue was identified and a fix deployed to resolve the issue

Incident Start Time: 2026-10-01 8:00 UTC
Incident End Time: 2026-05-06 9:36 UTC

Impact: Some traffic could have been delayed and/or rejected

If you have any questions, please contact support@sinch.com
Oct 1, 06:00 UTC
Delivery Issue Guatemala - Tigo
Resolved - This incident has been resolved.

Incident Start Time: 2026-09-30 20:59 UTC
Incident End Time: 2026-09-30 23:31 UTC
Oct 1, 00:35 UTC
Monitoring - A fix has been implemented and we are monitoring the results.
Sep 30, 23:55 UTC
Investigating - We are currently observing delivery issues in Guatemala - Tigo

Incident Start Time: 2026-09-30 20:59 UTC

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

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.
Sep 30, 21:22 UTC

Sep 30, 2026

Campaigns Application Maintenance
Completed - The scheduled maintenance has been completed.
Sep 30, 14:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 30, 13:30 UTC
Scheduled - Internal changes.
Sep 30, 13:24 UTC
Delivery Issue Guatemala - Tigo
Resolved - This incident has been resolved.

Incident Start Time: 2026-09-29 23:27 UTC
Incident Start Time: 2026-09-30 09:01 UTC
Sep 30, 12:30 UTC
Monitoring - A fix has been implemented and we are monitoring the results.
Sep 30, 08:12 UTC
Update - We are continuing to investigate this issue.
Sep 30, 03:02 UTC
Update - We are continuing to investigate this issue.
Sep 30, 00:54 UTC
Investigating - We are currently observing delivery issues in Guatemala - Tigo

Incident Start Time: 2026-09-29 23:27 UTC

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

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.
Sep 29, 23:50 UTC
Sinch Maintenance - SSL Certificate Renewal
Completed - The scheduled maintenance has been completed.
Sep 30, 09:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 30, 07:00 UTC
Scheduled - Sinch will be performing a scheduled maintenance to renew the SSL certificate's.

Type: Scheduled Maintenance

Maintenance: SSL Certificate Updates

Maintenance Start Time: 2026-09-30 07:00 UTC
Maintenance End Time: 2026-09-30 09:00 UTC

Impact: eu4.httpsms.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.

As part of this update, please note that the root certificates have also changed. We recommend updating the root certificates as well to ensure continued trust and smooth operation.

Download the certificate files for all the above mentioned certificates here: https://clxgroup.sharepoint.com/:f:/s/CLX_Support_Anonymous_link/IgDa0GOyucSORZQIoTbNaA3iAfLyHou2CQMlByjL9ePUAHs
Sep 15, 16:02 UTC
Sinch Scheduled Maintenance - Elastic SIP Trunking- Application and Media Servers (2 of 2)
Completed - The scheduled maintenance has been completed.
Sep 30, 07:02 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 30, 06:01 UTC
Scheduled - Sinch Elastic SIP Trunking will be deploying a software update on the voice application and media servers. The maintenance is classified as low risk, and there is no expected to impact to services - the schedule includes time required to roll back if needed. The maintenance is scheduled to be released in two separate sessions to resolve an issue resulting in intermittent inbound call completion issues.

Step 1 - Sept 29, media server updates
Step 2 - Sept 30, voice application server updates

This is being sent as a courtesy notice in the event that you experience issues with your service during the maintenance window. For further questions, please contact us at support@sinch.com

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/
Sep 21, 01:22 UTC
Sinch Scheduled Maintenance – Chatlayer Kafka Cluster (EU)
Completed - The scheduled maintenance has been completed.
Sep 30, 07:01 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 30, 06:00 UTC
Scheduled - We are writing to inform you that, as part of our continuous efforts to improve the performance and reliability of the Chatlayer platform, we will be performing scheduled Kafka cluster maintenance at the time specified below.

Type: Kafka Cluster Maintenance.

Maintenance Start Time: 2026-09-30 06:00 UTC
Maintenance End Time: 2026-09-30 07:00 UTC

Impact: No disruption to bot, voice, or integration traffic is expected during this maintenance window.

We appreciate your patience and apologies for any inconvenience during this maintenance period. If for any reason the maintenance is extended or rescheduled, we will update this page accordingly.

Please contact support@sinch.com if you require further information or assistance.
Sep 10, 20:04 UTC

Sep 29, 2026

Sinch Contact Pro - Test tenant upgrade
Completed - The scheduled maintenance has been completed.
Sep 29, 14:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 29, 06:01 UTC
Scheduled - Dear Customer

This notification is related to Contact Pro test tenant maintenance.
If you currently do not have a test tenant, please ignore this message.

We will be upgrading all customer test tenants to the newest release 26Q4 on Tuesday 29th of September.
During the day, there will be approximately 30 minutes service break for your test tenant.
Tenants will be ready for your testing on Wednesday 30th of September at 07:00 UTC.

Production tenants will be upgraded on October 17-18th.

What´s new documentation regarding the upcoming 26Q4 release is available in:
https://docs.cc.sinch.com/cloud/whats-new/en/index.html

For more details or questions related to the maintenance you can contact us via a support ticket:
https://sinchenterprise.atlassian.net/servicedesk/customer/portal/1181

Best Regards,
Sinch Contact Pro team
Sep 23, 12:07 UTC
Sinch Scheduled Maintenance - Elastic SIP Trunking- Application and Media Servers (1 of 2)
Completed - The scheduled maintenance has been completed.
Sep 29, 07:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 29, 06:00 UTC
Scheduled - Sinch Elastic SIP Trunking will be deploying a software update on the voice application and media servers. The maintenance is classified as low risk, and there is no expected to impact to services - the schedule includes time required to roll back if needed. The maintenance is scheduled to be released in two separate sessions to resolve an issue resulting in intermittent inbound call completion issues.

Step 1 - Sept 29, media server updates
Step 2 - Sept 30, voice application server updates

This is being sent as a courtesy notice in the event that you experience issues with your service during the maintenance window. For further questions, please contact us at support@sinch.com

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/
Sep 21, 01:21 UTC

Sep 28, 2026

Delivery Issue Qatar - Ooredoo Qatar
Resolved - This incident has been resolved.

Incident Start Time: 2026-09-28 21:43 UTC
Incident End Time: 2026-09-28 22:46 UTC
Sep 28, 23:35 UTC
Monitoring - We are observing a service restoration and are monitoring traffic performance.
Sep 28, 23:03 UTC
Investigating - We are currently observing delivery issues in Qatar - Ooredoo Qatar.

Incident Start Time: 2026-09-28 21:43 UTC

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

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.
Sep 28, 22:26 UTC
Campaigns Application Maintenance
Completed - The scheduled maintenance has been completed.
Sep 28, 11:05 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 28, 10:35 UTC
Scheduled - Technical maintenance
Sep 28, 10:29 UTC
Delivery Issue Belgium - Proximus
Resolved - This incident has been resolved.

Incident Start Time: 2026-09-27 22:01 UTC
Incident End Time: 2026-09-28 02:00 UTC
Sep 28, 02:08 UTC
Monitoring - A fix has been implemented and we are monitoring the results.
Sep 28, 01:34 UTC
Identified - The carrier has confirmed a degradation on their end, and they are currently working on resolving the issue.

As soon as we have any updates, they will be shared accordingly.
Sep 27, 23:51 UTC
Investigating - We are currently observing delivery issues in Belgium - Proximus

Incident Start Time: 2026-09-27 22:01 UTC

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

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.
Sep 27, 22:49 UTC

Sep 27, 2026

Sep 26, 2026

No incidents reported.

Sep 25, 2026

Customer Support - Ticketing System
Resolved - This incident has been resolved.

Incident Start Time : 2026-09-25 14:46 UTC
Incident End Time : 2026-09-25 16:03 UTC
Sep 25, 16:26 UTC
Investigating - We are currently experiencing an issue with our ticketing system related to the following emails:

support@sinch.com

Impact: Customers may experience delayed responses from support.

Incident Start Time : 2026-09-25 14:46 UTC

As an alternative in the meantime, please raise all tickets via our ticketing portal at support.sinch.com.
Sep 25, 15:31 UTC
External Maintenance - United States - T-Mobile
Completed - The scheduled maintenance has been completed.
Sep 25, 11:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 25, 03:01 UTC
Scheduled - United States - T-Mobile has scheduled a maintenance.

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

Maintenance Start Time: 2026-09-25 03:00 UTC
Maintenance End Time: 2026-09-25 11:00 UTC
Sep 22, 18:38 UTC
Sinch Internal Emergency Maintenance - MMS
Completed - The scheduled maintenance has been completed.
Sep 25, 10:31 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 25, 08:00 UTC
Scheduled - We are writing to inform you that we will be performing an Emergency maintenance on our MMS platform at the times specified below.

Type: Emergency Maintenance - MMS
Start Time: 2026-09-25 08:00 UTC
End Time: 2026-09-25 10:30 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.
Sep 24, 14:40 UTC
External Maintenance - United States
Completed - The scheduled maintenance has been completed.
Sep 25, 10:30 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 25, 08:01 UTC
Scheduled - An external supplier has scheduled a maintenance.

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

Maintenance Start Time: 2026-09-25 08:00 UTC
Maintenance End Time: 2026-09-25 10:30 UTC
Sep 24, 15:31 UTC
Delivery Issue Brazil - Claro
Resolved - This incident has been resolved.

Incident Start Time: 2026-09-25 03:27 UTC
Incident End Time: 2026-09-25 06:13 UTC
Sep 25, 06:29 UTC
Identified - The carrier has confirmed a degradation on their end, and they are currently working on resolving the issue.

As soon as we have any updates, they will be shared accordingly.
Sep 25, 04:37 UTC
Investigating - We are currently observing delivery issues in Brazil - Claro

Incident Start Time: 2026-09-25 03:27 UTC

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

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.
Sep 25, 03:35 UTC
Sinch Scheduled Maintenance - Elastic SIP Trunking- Call Routing Engine
Completed - The scheduled maintenance has been completed.
Sep 25, 04:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 25, 03:00 UTC
Update - We will be undergoing scheduled maintenance during this time.
Sep 21, 01:56 UTC
Scheduled - The date has been corrected to September 25 (originally noticed for September 24).
Please note, this maintenance was originally scheduled on September 9, 2026. These changes were rolled back on September 10, 2026 after memory allocation errors were identified.

======

Sinch Elastic SIP Trunking will be deploying a software update on the call routing engine. The scheduled maintenance is classified as low risk, and there is no expected to impact to services. The scheduled maintenance window includes time required to roll back if needed. The purpose of this maintenance is to:

- Improve handling of SIP error code tracking in our monitoring systems
- Resolve PAI when starting with 'tel:'
- Standardize inbound call routing for numbers outside of North America
- Minor bug fixes unrelated to the call flow

This is being sent as a courtesy notice in the event that you experience issues with your service during the maintenance window. For further questions, please contact us at support@sinch.com

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/
Sep 20, 22:09 UTC

Sep 24, 2026

External Maintenance - United States - T-Mobile
Completed - The scheduled maintenance has been completed.
Sep 24, 11:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 24, 03:00 UTC
Scheduled - United States - T-Mobile has scheduled a maintenance.

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

Maintenance Start Time: 2026-09-24 03:00 UTC
Maintenance End Time: 2026-09-24 11:00 UTC
Sep 22, 18:31 UTC
DI MMS 365 (MM4) Operator Services | Operator Services | Application Maintenance | PCR Number #PCRSDI-12370
Completed - The scheduled maintenance has been completed.
Sep 24, 10:01 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 24, 06:00 UTC
Scheduled - Services: DI MMS 365 (MM4) Operator Services
PCR Number: PCRSDI-12370

Start Date and Time (GMT) :: 24th September 2026 06:00 Hrs.
End Date and Time (GMT) :: 24th September 2026 10:00 Hrs.

Impact
Mobile Terminating (MT) Traffic: Potential Impact
Mobile Originated (MO) Traffic: Potential Impact
DR Notification: Potential Impact
Report Manager Access: Not impacted
Report Manager Statistics: Not impacted

Description:
Sinch Digital Interconnect has scheduled a planned maintenance to carry out activities on the internal applications; potential for latency may occur during this activity.

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.
Sep 22, 14:42 UTC
Sinch Internal Maintenance - BR1 Network Infrastructure
Completed - The scheduled maintenance has been completed.
Sep 24, 10:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 24, 08:00 UTC
Scheduled - Dear Client,

We are reaching out to inform you that a maintenance will be performed on our BR1 network infrastructure during the scheduled time window below.

Type: Network Maintenance
Affected Site: BR1

Maintenance Start Time: 2026-09-24 08:00 UTC
Maintenance End Time: 2026-09-24 10:00 UTC

Impact: Clients may experience brief delay in MT/MO traffic towards the following destinations.
Colombia

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.
Sep 10, 20:18 UTC
DI SMS 365 (MM4) | Operator Services | Application Maintenance | PCR Number # PCRSDI-12360
Completed - The scheduled maintenance has been completed.
Sep 24, 09:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 24, 05:00 UTC
Scheduled - Services: DI SMS 365 (MM4)
PCR Number: PCRSDI-12360

Start Date and Time (GMT) :: 24th Sept 2026 5:00:00 Hrs.
End Date and Time (GMT) :: 24th Sept 2026 09:00 Hrs.

Impact
Mobile Terminating (MT) Traffic: No impact expected.
Mobile Originated (MO) Traffic: No impact expected.
DR Notification: No impact expected.
Report Manager Access: Not impacted
Report Manager Statistics: Not impacted

Description:
Sinch Digital Interconnect has scheduled a planned maintenance to carry out activities on the internal applications; no impact is expected during this activity.

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.
Sep 15, 16:24 UTC

Sep 23, 2026

Delivery Issue Venezuela - Digitel
Resolved - This incident has been resolved.

Incident Start Time: 2026-09-23 00:44 UTC
Incident End Time: 2026-09-23 11:50 UTC
Sep 23, 13:09 UTC
Update - We are continuing to investigate this issue.
Sep 23, 07:04 UTC
Update - We are continuing to investigate this issue.
Sep 23, 03:03 UTC
Investigating - We are currently observing delivery issues in Venezuela - Digitel.

Incident Start Time: 2026-09-23 00:44 UTC

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

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.
Sep 23, 01:53 UTC
Chatlayer - US and LATAM regions outage
Resolved - We are writing to inform you regarding an incident that affected our Chatlayer platform in the US and LATAM regions during the below timeframe.

Incident Start Time: 2026-09-23 13:25 UTC
Incident End Time: 2026-09-23 14:30 UTC

During the incident you may have experienced that bots in the affected regions were not replying as expected.

If you have any further questions or concerns, please reach out to support@sinch.com.
Sep 23, 12:25 UTC
External Maintenance - United States - T-Mobile
Completed - The scheduled maintenance has been completed.
Sep 23, 11:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 23, 02:00 UTC
Scheduled - United States - T-Mobile has scheduled a maintenance.

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

Maintenance Start Time: 2026-09-23 02:00 UTC
Maintenance End Time: 2026-09-23 11:00 UTC
Sep 16, 19:36 UTC
DI SMS 365 (MM7) | Operator Services | Application Maintenance | PCR Number # PCRSDI-12359
Completed - The scheduled maintenance has been completed.
Sep 23, 09:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 23, 05:00 UTC
Scheduled - Services: DI SMS 365 (MM7)
PCR Number: PCRSDI-12359

Start Date and Time (GMT) :: 23rd Sept 2026 5:00:00 Hrs.
End Date and Time (GMT) :: 23rd Sept 2026 09:00 Hrs.

Impact
Mobile Terminating (MT) Traffic: No impact expected.
Mobile Originated (MO) Traffic: No impact expected.
DR Notification: No impact expected.
Report Manager Access: Not impacted
Report Manager Statistics: Not impacted

Description:
Sinch Digital Interconnect has scheduled a planned maintenance to carry out activities on the internal applications; no impact is expected during this activity.

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.
Sep 15, 16:21 UTC
Sinch Emergency Maintenance - Elastic SIP Trunking SBCs
Completed - The scheduled maintenance has been completed.
Sep 23, 04:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 23, 03:00 UTC
Scheduled - Sinch Elastic SIP Trunking will be deploying an update on the session border controllers [SBC]. The emergency maintenance is classified as low risk, and there is no expected to impact to services. The maintenance window includes time required to revert changes if needed. The purpose of this maintenance is to:

- Maintain customer SIP headers (x-headers)
- Improved handling of rogue RTP

This is being sent as a courtesy notice in the event that you experience issues with your service during the maintenance window. For further questions, please contact us at support@sinch.com
Sep 17, 20:57 UTC
Sinch Emergency Maintenance - Message Manager
Completed - The scheduled maintenance has been completed.
Sep 23, 01:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 23, 00:00 UTC
Scheduled - An emergency maintenance activity is scheduled for Message Manager.

Customers are advised not to schedule any campaigns during this maintenance window.

Impact: The Message Manager UI will be unavailable during the application upgrade.

Maintenance Start Time: 2026-09-23 00:00 UTC
Maintenance End Time: 2026-09-23 01:00 UTC
Sep 22, 19:00 UTC

Sep 22, 2026

Delivery Issue Sri Lanka - Hutchison
Resolved - This incident has been resolved.

Incident Start Time: 2026-09-22 10:26 UTC
Incident End Time: 2026-09-22 11:14 UTC
Sep 22, 12:55 UTC
Investigating - We are currently observing delivery issues in Sri Lanka - Hutchison

Incident Start Time: 2026-09-22 10:26 UTC

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

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.
Sep 22, 10:53 UTC
External Maintenance - United States - T-Mobile
Completed - The scheduled maintenance has been completed.
Sep 22, 11:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 22, 02:00 UTC
Scheduled - United States - T-Mobile has scheduled a maintenance.

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

Maintenance Start Time: 2026-09-22 02:00 UTC
Maintenance End Time: 2026-09-22 11:00 UTC
Sep 16, 19:35 UTC
Sinch Internal Maintenance - US Shortcode
Completed - The scheduled maintenance has been completed.
Sep 22, 10:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 22, 06:00 UTC
Scheduled - Dear Client,

Sinch will be performing a scheduled maintenance on our US Shortcode Products at the times specified below.

As part of this update, clients may see a delays or failures during delivery from Shortcodes sending to US Devices.

Start Time: 2026-09-22 06:00 UTC
End Time: 2026-09-22 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.
Please contact support@sinch.com should you require further information or assistance.
Sep 4, 19:19 UTC
Service Degradation – Calling – AP-Southeast-1
Resolved - This incident has been resolved.

Incident Start Time: 2026-09-22 04:50 UTC
Incident End Time: 2026-09-22 07:23 UTC
Sep 22, 08:36 UTC
Monitoring - A fix has been implemented and we are monitoring the results.
Sep 22, 08:15 UTC
Update - We are continuing to investigate this issue.
Sep 22, 07:09 UTC
Investigating - We want to inform you that we are currently experiencing a performance degradation impacting our Calling services in the AP-Southeast-1 region.

Incident Start Time: 2026-09-22 04:50 UTC

Impact: Customers may experience delayed or failed attempts via In-app Calling / PSTN Calling/ Video Calling and SIP Trunk .

We sincerely apologize for any inconvenience this may cause and appreciate your understanding while we work to resolve the issue.

For further information or assistance, please contact us at support@sinch.com.
Sep 22, 05:40 UTC
Delivery Issue Mexico - Izzi
Resolved - This incident has been resolved.

Incident Start Time: 2026-09-22 03:05 UTC
Incident End Time: 2026-09-22 05:31 UTC
Sep 22, 06:03 UTC
Update - We are continuing to investigate this issue.
Sep 22, 04:51 UTC
Investigating - We are currently observing delivery issues in Mexico - Izzi

Incident Start Time: 2026-09-22 03:05 UTC

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

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.
Sep 22, 03:47 UTC
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