Update - We are continuing to investigate this issue.
Aug 27, 2026 - 20:28 UTC
Aug 27, 2026 - 20:28 UTC
Update - We are continuing to investigate this issue.
Aug 26, 2026 - 20:25 UTC
Aug 26, 2026 - 20:25 UTC
Update - We are continuing to investigate this issue.
Aug 25, 2026 - 20:22 UTC
Aug 25, 2026 - 20:22 UTC
Update - We are continuing to investigate this issue.
Aug 25, 2026 - 12:11 UTC
Aug 25, 2026 - 12:11 UTC
Update - We are continuing to investigate this issue.
Aug 24, 2026 - 11:21 UTC
Aug 24, 2026 - 11:21 UTC
Update - We are continuing to investigate this issue.
Aug 23, 2026 - 09:12 UTC
Aug 23, 2026 - 09:12 UTC
Update - We are continuing to investigate this issue.
Aug 22, 2026 - 08:05 UTC
Aug 22, 2026 - 08:05 UTC
Update - We are continuing to investigate this issue.
Aug 21, 2026 - 07:48 UTC
Aug 21, 2026 - 07:48 UTC
Update - We are continuing to investigate this issue.
Aug 20, 2026 - 20:05 UTC
Aug 20, 2026 - 20:05 UTC
Update - We are continuing to investigate this issue.
Aug 20, 2026 - 11:57 UTC
Aug 20, 2026 - 11:57 UTC
Update - We are continuing to investigate this issue.
Aug 20, 2026 - 08:31 UTC
Aug 20, 2026 - 08:31 UTC
Update - We are continuing to investigate this issue.
Aug 20, 2026 - 06:50 UTC
Aug 20, 2026 - 06:50 UTC
Investigating - We are currently observing delivery issues in Canada - ICE Wireless.
Incident Start Time: 2026-08-20 02:44 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.
Aug 20, 2026 - 05:28 UTC
Incident Start Time: 2026-08-20 02:44 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.
Aug 20, 2026 - 05:28 UTC
External Connectivity
Degraded Performance
SMS - APAC
Operational
SMS - EMEA
Operational
SMS - LATAM
Operational
SMS - CA - ShortCode
Degraded Performance
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
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
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance
Scheduled Maintenance
External Maintenance - T-Mobile United States Aug 31, 2026 03:00-11:00 UTC
T-Mobile United States 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: 2026-08-31 03:00 UTC
Maintenance End Time: 2026-08-31 11:00 UTC
Posted on Aug 27, 2026 - 20:21 UTC
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: 2026-08-31 03:00 UTC
Maintenance End Time: 2026-08-31 11:00 UTC
Posted on Aug 27, 2026 - 20:21 UTC
External Maintenance - AT&T - United States Aug 31, 2026 08:00-09:00 UTC
AT&T - United States has scheduled a maintenance.
Impact MMS: No expected impact
Maintenance start time: 2026-08-31 08:00 UTC
Maintenance end time: 2026-08-31 09:00 UTC
Posted on Aug 26, 2026 - 15:56 UTC
Impact MMS: No expected impact
Maintenance start time: 2026-08-31 08:00 UTC
Maintenance end time: 2026-08-31 09:00 UTC
Posted on Aug 26, 2026 - 15:56 UTC
Sinch Maintenance - US Shortcode Sep 1, 2026 09:00-10:00 UTC
Dear Client,
Sinch will be performing a scheduled maintenance on our US Shortcode Products.
As part of this update, clients may see a delays or failures during delivery from Shortcodes sending to US Devices.
Start Time: 2026-09-01 09:00 UTC
End Time: 2026-09-01 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 Aug 13, 2026 - 17:30 UTC
Sinch will be performing a scheduled maintenance on our US Shortcode Products.
As part of this update, clients may see a delays or failures during delivery from Shortcodes sending to US Devices.
Start Time: 2026-09-01 09:00 UTC
End Time: 2026-09-01 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 Aug 13, 2026 - 17:30 UTC
Sinch Scheduled Maintenance - Norway - Telia Sep 1, 2026 21:00-23:00 UTC
We will be performing a maintenance on our connections towards Norway - Telia.
Type: Scheduled Maintenance - Norway - Telia
Maintenance Start Time: 2026-09-01 21:00 UTC
Maintenance End Time: 2026-09-01 23:00 UTC
Impact MT: Clients may experience delayed or failed MT traffic for outbound messages sent to Norway - Telia.
Impact DR: Clients may experience delayed or failed delivery receipts for MT traffic sent to Norway - Telia.
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 Aug 13, 2026 - 17:18 UTC
Type: Scheduled Maintenance - Norway - Telia
Maintenance Start Time: 2026-09-01 21:00 UTC
Maintenance End Time: 2026-09-01 23:00 UTC
Impact MT: Clients may experience delayed or failed MT traffic for outbound messages sent to Norway - Telia.
Impact DR: Clients may experience delayed or failed delivery receipts for MT traffic sent to Norway - Telia.
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 Aug 13, 2026 - 17:18 UTC
Sinch Internal Maintenance – Sinch SG1 Network Infrastructure Sep 2, 2026 00:00-02:00 UTC
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 SG1 network infrastructure.
Maintenance Start Time: 2026-09-02 00:00 UTC
Maintenance End Time: 2026-09-02 02:00 UTC
Potential service-impact duration: Approximately 5–10 minutes within the maintenance window.
Posted on Aug 19, 2026 - 20:51 UTC
Maintenance Start Time: 2026-09-02 00:00 UTC
Maintenance End Time: 2026-09-02 02:00 UTC
Potential service-impact duration: Approximately 5–10 minutes within the maintenance window.
Posted on Aug 19, 2026 - 20:51 UTC
Service notification - MCC and MNC added to the Verification Price list Sep 2, 2026 08:00-10:00 UTC
Important Update: Format change in the price list for the Verification service.
We are updating the format of the Verification price list file generated from the Sinch Dashboard. Please review and update your local import routines or automated scripts to accommodate the two new columns before the effective date.
What is changing?
New columns: Mobile Country Code (MCC) and Mobile Network Code (MNC) are being added.
Location: These will be placed next to the existing Country column.
When is this happening?
Effective date: 2026-09-02
Please contact support@sinch.com should you require further information or assistance.
Posted on Aug 18, 2026 - 15:34 UTC
We are updating the format of the Verification price list file generated from the Sinch Dashboard. Please review and update your local import routines or automated scripts to accommodate the two new columns before the effective date.
What is changing?
New columns: Mobile Country Code (MCC) and Mobile Network Code (MNC) are being added.
Location: These will be placed next to the existing Country column.
When is this happening?
Effective date: 2026-09-02
Please contact support@sinch.com should you require further information or assistance.
Posted on Aug 18, 2026 - 15:34 UTC
Sinch Scheduled Maintenance – US1 VPN Device Sep 2, 2026 08:00-11:00 UTC
Dear Client,
We will be performing planned network maintenance on the US1 Network Hub.
Impact: clients may experience intermittent delays or failures for MT and MO traffic to and from the following countries:
Bolivia
Brazil
Canada
Chile
Costa Rica
Guatemala
Paraguay
Peru
Puerto Rico
United States
Uruguay
Start time: 2026-09-02 08:00 UTC
End time: 2026-09-02 11:00 UTC
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 Aug 17, 2026 - 08:25 UTC
We will be performing planned network maintenance on the US1 Network Hub.
Impact: clients may experience intermittent delays or failures for MT and MO traffic to and from the following countries:
Bolivia
Brazil
Canada
Chile
Costa Rica
Guatemala
Paraguay
Peru
Puerto Rico
United States
Uruguay
Start time: 2026-09-02 08:00 UTC
End time: 2026-09-02 11:00 UTC
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 Aug 17, 2026 - 08:25 UTC
Sinch Internal Maintenance – Chatlayer Platform (EMEA region) Sep 9, 2026 06:00-07:00 UTC
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 a scheduled Kafka cluster upgrade at the times specified below.
Type: Scheduled Maintenance – Chatlayer Kafka Upgrade
Maintenance Start Time: 2026-09-09 06:00 UTC
Maintenance End Time: 2026-09-09 07:00 UTC
Impact: Customers may experience brief, intermittent delays to bot, voice, or integration traffic during their maintenance window. No message loss or extended downtime is expected.
We appreciate your patience and apologize 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 should you require further information or assistance.
Posted on Aug 21, 2026 - 12:57 UTC
Type: Scheduled Maintenance – Chatlayer Kafka Upgrade
Maintenance Start Time: 2026-09-09 06:00 UTC
Maintenance End Time: 2026-09-09 07:00 UTC
Impact: Customers may experience brief, intermittent delays to bot, voice, or integration traffic during their maintenance window. No message loss or extended downtime is expected.
We appreciate your patience and apologize 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 should you require further information or assistance.
Posted on Aug 21, 2026 - 12:57 UTC
Sinch Internal Maintenance – Chatlayer Platform (US region) Sep 9, 2026 08:00-09:00 UTC
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 a scheduled Kafka cluster upgrade at the times specified below.
Type: Scheduled Maintenance – Chatlayer Kafka Upgrade
Maintenance Start Time: 2026-09-09 08:00 UTC
Maintenance End Time: 2026-09-09 09:00 UTC
Impact: Customers may experience brief, intermittent delays to bot, voice, or integration traffic during their maintenance window. No message loss or extended downtime is expected.
We appreciate your patience and apologize 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 should you require further information or assistance.
Posted on Aug 21, 2026 - 12:59 UTC
Type: Scheduled Maintenance – Chatlayer Kafka Upgrade
Maintenance Start Time: 2026-09-09 08:00 UTC
Maintenance End Time: 2026-09-09 09:00 UTC
Impact: Customers may experience brief, intermittent delays to bot, voice, or integration traffic during their maintenance window. No message loss or extended downtime is expected.
We appreciate your patience and apologize 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 should you require further information or assistance.
Posted on Aug 21, 2026 - 12:59 UTC
Sinch Internal Maintenance – Chatlayer Platform (South America region) Sep 9, 2026 09:00-10:00 UTC
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 a scheduled Kafka cluster upgrade at the times specified below.
Type: Scheduled Maintenance – Chatlayer Kafka Upgrade
Maintenance Start Time: 2026-09-09 09:00 UTC
Maintenance End Time: 2026-09-09 10:00 UTC
Impact: Customers may experience brief, intermittent delays to bot, voice, or integration traffic during their maintenance window. No message loss or extended downtime is expected.
We appreciate your patience and apologize 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 should you require further information or assistance.
Posted on Aug 21, 2026 - 13:00 UTC
Type: Scheduled Maintenance – Chatlayer Kafka Upgrade
Maintenance Start Time: 2026-09-09 09:00 UTC
Maintenance End Time: 2026-09-09 10:00 UTC
Impact: Customers may experience brief, intermittent delays to bot, voice, or integration traffic during their maintenance window. No message loss or extended downtime is expected.
We appreciate your patience and apologize 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 should you require further information or assistance.
Posted on Aug 21, 2026 - 13:00 UTC
Sinch Internal Maintenance – Chatlayer Platform (India region) Sep 9, 2026 15:00-16:00 UTC
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 a scheduled Kafka cluster upgrade at the times specified below.
Type: Scheduled Maintenance – Chatlayer Kafka Upgrade
Maintenance Start Time: 2026-09-09 15:00 UTC
Maintenance End Time: 2026-09-09 16:00 UTC
Impact: Customers may experience brief, intermittent delays to bot, voice, or integration traffic during their maintenance window. No message loss or extended downtime is expected.
We appreciate your patience and apologize 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 should you require further information or assistance.
Posted on Aug 21, 2026 - 13:02 UTC
Type: Scheduled Maintenance – Chatlayer Kafka Upgrade
Maintenance Start Time: 2026-09-09 15:00 UTC
Maintenance End Time: 2026-09-09 16:00 UTC
Impact: Customers may experience brief, intermittent delays to bot, voice, or integration traffic during their maintenance window. No message loss or extended downtime is expected.
We appreciate your patience and apologize 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 should you require further information or assistance.
Posted on Aug 21, 2026 - 13:02 UTC
Sinch Internal Maintenance - US2 Network Infrastructure Sep 10, 2026 07:00-09:00 UTC
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.
Posted on Aug 27, 2026 - 16:52 UTC
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.
Posted on Aug 27, 2026 - 16:52 UTC
Sinch Internal Maintenance - IN1 Network Infrastructure Sep 10, 2026 12:00-14:00 UTC
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: 2026-09-10 12:00 UTC
Maintenance End Time: 2026-09-10 14:00 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.
Posted on Aug 27, 2026 - 17:06 UTC
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: 2026-09-10 12:00 UTC
Maintenance End Time: 2026-09-10 14:00 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.
Posted on Aug 27, 2026 - 17:06 UTC
Sinch Internal Maintenance - EU1 Network Infrastructure Sep 10, 2026 19:00-21:00 UTC
Dear Client,
We are reaching out to inform you that a maintenance will be performed on our EU1 network infrastructure during the scheduled time window below.
Type: Network Maintenance
Affected Site: EU1
Maintenance Start Time: 2026-09-10 19:00 UTC
Maintenance End Time: 2026-09-10 21:00 UTC
Impact: Customers may experience multiple brief connectivity issues during the duration of this maintenance towards the impacted endpoints listed below.
Impacted endpoints:
eu1.smpp.api.sinch.com
eu1.httpsms.api.sinch.com
eu1.httplookup.api.sinch.com
To avoid connectivity issues we recommend connecting to the below endpoints during the duration of this maintenance.
Available endpoints:
eu3.smpp.api.sinch.com
eu3.httpsms.api.sinch.com
eu3.httplookup.api.sinch.com
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 Aug 27, 2026 - 17:14 UTC
We are reaching out to inform you that a maintenance will be performed on our EU1 network infrastructure during the scheduled time window below.
Type: Network Maintenance
Affected Site: EU1
Maintenance Start Time: 2026-09-10 19:00 UTC
Maintenance End Time: 2026-09-10 21:00 UTC
Impact: Customers may experience multiple brief connectivity issues during the duration of this maintenance towards the impacted endpoints listed below.
Impacted endpoints:
eu1.smpp.api.sinch.com
eu1.httpsms.api.sinch.com
eu1.httplookup.api.sinch.com
To avoid connectivity issues we recommend connecting to the below endpoints during the duration of this maintenance.
Available endpoints:
eu3.smpp.api.sinch.com
eu3.httpsms.api.sinch.com
eu3.httplookup.api.sinch.com
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 Aug 27, 2026 - 17:14 UTC
Service Announcement & Maintenance: New SMSC Site & Whitelisting Requirements - US Region Oct 1, 2026 07:00-08:00 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 2026-10-01 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.
Posted on Jul 10, 2026 - 08:37 UTC
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.
Posted on Jul 10, 2026 - 08:37 UTC