External Maintenance - T-Mobile United States
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 24, 2026 - 03:30 UTC
Scheduled - T-Mobile USA 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: 2026-07-24 03:30 UTC
Maintenance end time: 2026-07-24 12:00 UTC
Jul 24, 2026 03:30-12:00 UTC
External Connectivity Under Maintenance
SMS - APAC Operational
SMS - EMEA Operational
SMS - LATAM Operational
SMS - CA - ShortCode Operational
SMS - CA - Toll Free Operational
SMS - US - ShortCode Under Maintenance
SMS - US - Toll Free Operational
SMS - US - 10DLC Under Maintenance
MMS - US Under Maintenance
MMS - US - Toll Free Operational
MMS - US - 10DLC Under Maintenance
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 - Bell Canada Jul 27, 2026 07:00-10:00 UTC

Bell Canada has scheduled a maintenance.

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

Maintenance start time: 2026-07-27 07:00 UTC
Maintenance end time: 2026-07-27 10:00 UTC
Posted on Jul 22, 2026 - 15:16 UTC

External Maintenance - United States and Canada Jul 28, 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: 03:00 UTC
Maintenance end time: 10:00 UTC
Posted on Jul 24, 2026 - 00:20 UTC

External Maintenance - Toll-Free Number Provider (US and CA) Jul 30, 2026 03:00-07:00 UTC

We are writing to inform you that our Toll-Free Number Provider (US and CA) will be performing planned maintenance at the times specified below:

Start Time: 2026-07-30 03:00 UTC
End Time: 2026-07-30 07:00 UTC

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.
Posted on Jun 02, 2026 - 01:49 UTC

Sinch Scheduled Maintenance - MMS - United States - AT&T Jul 30, 2026 04:00-06:00 UTC

Update - Dear Client,

We are writing to inform you that the concerned maintenance activity has been postponed to the below mentioned time frame.


Previous Start Time: 2026-07-21 04:00 UTC
Previous End Time: 2026-07-21 06:00 UTC

New Start Time: 2026-07-30 04:00 UTC
New End Time:2026-07-30 06:00 UTC

Impact: During the maintenance window, customers may experience a loss of MMS delivery receipts. In addition, MMS MT traffic destined for AT&T devices may be delayed or fail.

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.
Jul 14, 2026 - 15:21 UTC
Scheduled - Dear Client,

To improve the performance and reliability of our MMS platform, Sinch has scheduled maintenance affecting AT&T MMS connectivity. Please find the maintenance details below.

Maintenance Start time: 2026-07-21 04:00 UTC
Maintenance End time: 2026-07-21 06:00 UTC

Impact: During the maintenance window, customers may experience a loss of MMS delivery receipts. In addition, MMS MT traffic destined for AT&T devices may be delayed or fail.

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.
Jul 02, 2026 - 18:32 UTC

Sinch Maintenance - Numbers Aug 4, 2026 06:00-09:00 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 dashboard database between 6:00 and 9:00 UTC on August 4th.

Maintenance Start Time: August 4th 2026, 6:00 UTC
Maintenance End Time: August 4th 2026, 9:00 UTC

Impact: Customers may experience a slight increase in latency of Dashboard functionality - Short Code pages throughout the maintenance window, and a brief downtime of about 10 seconds as the database switches over to the secondary database.

We appreciate your patience and apologise 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 Jul 16, 2026 - 16:07 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
Jul 24, 2026

Unresolved incident: External Maintenance - T-Mobile United States.

Jul 23, 2026
External Maintenance - Toll-Free Number Provider (US and CA)
Completed - The scheduled maintenance has been completed.
Jul 23, 07:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 23, 03:00 UTC
Scheduled - We are writing to inform you that our Toll-Free Number Provider (US and CA) will be performing planned maintenance at the times specified below:

Start Time: 2026-07-23 03:00 UTC
End Time: 2026-07-23 07:00 UTC

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.
Jun 2, 01:30 UTC
Service Degradation - Customer Dashboard
Resolved - This incident has been resolved.

Incident End Time: 2026-07-23 06:40 UTC
Jul 23, 06:46 UTC
Investigating - We are writing to inform you that we are observing issues for Pricing, Country Information and Message Search modules on the customer dashboard.

We apologize for any inconvenience this may have caused and if you have any further questions or concerns please do not hesitate to reach out to support@sinch.com
Jul 23, 06:09 UTC
Jul 22, 2026
Campaigns Application Maintenance
Completed - The scheduled maintenance has been completed.
Jul 22, 13:30 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 22, 13:15 UTC
Scheduled - Technical update
Jul 22, 13:11 UTC
External Maintenance - T-Mobile United States
Completed - The scheduled maintenance has been completed.
Jul 22, 12:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 22, 02:00 UTC
Scheduled - T-Mobile USA 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: 2026-07-22 02:00 UTC
Maintenance end time: 2026-07-22 12:00 UTC
Jul 20, 20:36 UTC
Campaigns Application Maintenance
Completed - The scheduled maintenance has been completed.
Jul 22, 10:01 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 22, 08:30 UTC
Scheduled - Campaigns Application Maintenance
Jul 22, 08:09 UTC
Jul 21, 2026
Services | Operator Services | Application, Network Maintenance || PCR Number # PCRSDI-12306
Completed - The scheduled maintenance has been completed.
Jul 21, 18:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 21, 17:00 UTC
Scheduled - Services | Operator Services | Application, Network Maintenance || PCR Number # PCRSDI-12306

Services :: SMS 365 Operator RoW; E-mail 365; Message Manager
PCR Number :: PCRSDI-12306

Start Date and Time (GMT):: 21st July 2026 17:00 Hrs.
End Date and Time (GMT):: 21st July 2026 18:00 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.

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.
Jul 17, 17:46 UTC
Services | Operator Services | Application, Network or System Maintenance | PCR Number #PCRSDI-12304
Completed - The scheduled maintenance has been completed.
Jul 21, 17:01 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 21, 16:00 UTC
Scheduled - Services :: DI SMS 365
PCR Number :: PCRSDI-12304

Start Date and Time (GMT):: 7/21/2026 16:00
End Date and Time (GMT):: 7/21/2026 17:00

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.

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.
Jul 10, 18:49 UTC
Campaigns Application Maintenance
Completed - The scheduled maintenance has been completed.
Jul 21, 13:40 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 21, 12:45 UTC
Scheduled - Technical update.
Jul 21, 12:41 UTC
External Maintenance - T-Mobile United States
Completed - The scheduled maintenance has been completed.
Jul 21, 12:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 21, 02:01 UTC
Scheduled - T-Mobile USA 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: 2026-07-21 02:00 UTC
Maintenance end time: 2026-07-21 12:00 UTC
Jul 17, 18:42 UTC
International SMS 365 | Operator Services | Application Maintenance || PCR Number # PCRSDI-12310
Completed - The scheduled maintenance has been completed.
Jul 21, 05:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 21, 02:00 UTC
Scheduled - Services :: International SMS 365
PCR Number :: PCRSDI-12310


Start Date and Time (GMT):: 21st July 2026 02:00 Hrs.
End Date and Time (GMT):: 21st July 2026 05:00 Hrs.

Impact:
Mobile Terminating (MT) Traffic : No impact expected
Mobile Originated (MO) Traffic : No impact expected
DR Notification : No impact expected

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.

Maintenance affects: International SMS 365
Jul 17, 17:39 UTC
Delivery Issue Djibouti - Evatis
Resolved - This incident has been resolved.

Incident Start Time: 2026-07-20 21:15 UTC
Incident End Time: 2026-07-21 02:12 UTC
Jul 21, 03:21 UTC
Update - We are continuing to investigate this issue.
Jul 21, 01:09 UTC
Update - We are continuing to investigate this issue.
Jul 20, 23:03 UTC
Investigating - We are currently observing delivery issues in Djibouti - Evatis

Incident Start Time: 2026-07-20 21:15 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.
Jul 20, 21:48 UTC
MMX | Operator Services | Application Maintenance || PCR Number # PCRSDI-12307
Completed - The scheduled maintenance has been completed.
Jul 21, 01:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 20, 23:00 UTC
Scheduled - MMX | Operator Services | Application Maintenance || PCR Number # PCRSDI-12307

Services :: MM4 (MMS 365)
PCR Number :: PCRSDI-12307

Start Date and Time (GMT):: 20th July 2026 23:00 Hrs.
End Date and Time (GMT):: 21st July 2026 01:00 Hrs.

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

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.
Jul 17, 17:51 UTC
Jul 20, 2026
Campaigns Server Maintenance
Completed - The scheduled maintenance has been completed.
Jul 20, 21:00 UTC
Update - The maintenance is completed. The platforms are now fully operational
Jul 20, 20:34 UTC
Verifying - The server maintenance is over. We're currently monitoring the platforms.
Jul 20, 20:22 UTC
Update - We are starting a server maintenance.
This will impact our APIs and our sFTP Connector products in France.
A limited downtime is expected.
Jul 20, 20:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 20, 20:00 UTC
Update - We will be undergoing scheduled maintenance during this time.
Jun 18, 10:03 UTC
Update - We will be undergoing scheduled maintenance during this time.
Jun 18, 10:03 UTC
Scheduled - We will be performing a server maintenance.
This will impact our APIs and our sFTP Connector products in France.
A limited downtime is expected.
Jun 18, 10:01 UTC
Delivery Issue Italy - Fastweb
Resolved - This incident has been resolved.

Incident Start Time: 2026-07-20 04:34 UTC
Incident End Time: 2026-07-20 12:31 UTC
Jul 20, 12:33 UTC
Investigating - We are currently observing delivery issues in Italy - Fastweb.

Incident Start Time: 2026-07-20 04:34 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.
Jul 20, 05:03 UTC
External Maintenance - T-Mobile United States
Completed - The scheduled maintenance has been completed.
Jul 20, 12:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 20, 02:00 UTC
Scheduled - T-Mobile USA 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: 2026-07-20 02:00 UTC
Maintenance end time: 2026-07-20 12:00 UTC
Jul 17, 16:13 UTC
Delivery Issue Brazil - Algar Telecom
Resolved - This incident has been resolved.

Incident Start Time: 2026-07-19 05:02 UTC
Incident Start Time: 2026-07-19 23:43 UTC
Jul 20, 00:06 UTC
Update - We are continuing to investigate this issue.
Jul 20, 00:03 UTC
Update - We are continuing to investigate this issue.
Jul 19, 23:03 UTC
Update - We are continuing to investigate this issue.
Jul 19, 18:03 UTC
Update - We are continuing to investigate this issue.
Jul 19, 11:09 UTC
Investigating - We are currently observing delivery issues in Brazil - Algar Telecom

Incident Start Time: 2026-07-19 05:02 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.
Jul 19, 09:27 UTC
Jul 19, 2026
Delivery Issue Netherlands - Odido
Resolved - This incident has been resolved.

Incident Start Time: 2026-07-19 13:50 UTC
Incident End Time: 2026-07-19 21:14 UTC
Jul 19, 23:17 UTC
Update - We are continuing to investigate this issue.
Jul 19, 20:40 UTC
Update - We are continuing to investigate this issue.
Jul 19, 18:03 UTC
Investigating - We are currently observing delivery issues in Netherlands - Odido

Incident Start Time: 2026-07-19 13:50 UTC

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

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.
Jul 19, 14:13 UTC
Jul 18, 2026
Delivery Issue - Guernsey - Sure
Resolved - This incident has been resolved.

Incident Start Time: 2026-07-18 07:03 UTC
Incident End Time: 2026-07-18 16:10 UTC
Jul 18, 16:44 UTC
Update - We are continuing to investigate this issue.
Jul 18, 13:06 UTC
Investigating - We are currently observing delivery issues in Guernsey - Sure

Incident Start Time: 2026-07-18 07:03 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.
Jul 18, 11:09 UTC
Delivery Issue - Guadeloupe - Outremer Telecom
Resolved - This incident has been resolved.

Incident Start Time: 2026-07-18 06:05 UTC
Incident End Time: 2026-07-18 10:17 UTC
Jul 18, 12:22 UTC
Update - We are continuing to investigate this issue.
Jul 18, 09:22 UTC
Investigating - We are currently observing delivery issues in Guadeloupe - Outremer Telecom

Incident Start Time: 2026-07-18 06:05

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.
Jul 18, 07:24 UTC
Jul 17, 2026
Services | Operator Services | Potential delay in delivery of MO, MT and DLR | TT#MNOC-64700
Resolved - Technical teams deployed a corrective fix and initial monitoring has yielded positive results. Sinch NOC will continue to monitor services for stability.
Jul 17, 21:23 UTC
Update - We are continuing to monitor for any further issues.
Jul 17, 03:10 UTC
Monitoring - The issue was identified and corrected, and services have normalized. Engineering is currently working on a permanent fix as we monitor for any further interruptions in the interim.
Jul 16, 21:46 UTC
Investigating - Ticket Number: MNOC-64700
Services: SMSx

Description:
Currently, we are observing queues related to MO, MT and DLR traffic within our SMSx platform.
Few customers may observe a potential delay in delivery for MO, MT and DLR traffic.

Our technical teams are actively working to identify the root cause and implement a resolution as quickly as possible. We will continue to provide updates as more information becomes available. We appreciate your patience and understanding.


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

Incident Start Date & Time (GMT) : July 16, 19:05

If you have any questions, 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.
Jul 16, 20:47 UTC
Delivery Issue Brazil - TIM Brazil
Resolved - This incident has been resolved.

Incident Start Time: 2026-07-17 03:45 UTC.
Incident Start Time: 2026-07-17 15:49 UTC.
Jul 17, 15:50 UTC
Update - We are continuing to investigate this issue.
Jul 17, 10:02 UTC
Update - We are continuing to investigate this issue
Jul 17, 07:08 UTC
Investigating - We are currently observing delivery issues in Brazil - TIM Brazil

Incident Start Time: 2026-07-17 03:45 UTC.

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

We will update as soon as we have more information.
Jul 17, 05:01 UTC
Emergency Maintenance - SSL Certificate Renewal - *.clxcommunications.com
Completed - The scheduled maintenance has been completed.
Jul 17, 08:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 17, 06:00 UTC
Scheduled - Sinch will be performing emergency maintenance to renew the SSL certificate for *.clxcommunications.com

Type: Emergency Maintenance
Maintenance: SSL Certificate Renewal

Start Time: 2026-07-17 06:00 UTC
End Time: 2026-07-17 08:00 UTC

Impact: *.clxcommunications.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:
Bundle: https://clxgroup.sharepoint.com/:u:/s/CLX_Support_Anonymous_link/IQDminw-x3cjTYAzsEgg1z-lAU886Q3BSS6DcNTVw37OE9g
Cert: https://clxgroup.sharepoint.com/:u:/s/CLX_Support_Anonymous_link/IQAV1D-B14n6S7U9ejZQhSTnAVXZLz_wMvDXkf4nVgEQhFg
Jul 13, 16:39 UTC
Jul 16, 2026
Sinch Elastic SIP Trunking - Incident - Inbound call completion issues
Resolved - All inbound services for Elastic SIP Trunking have restored as of 21:12 UTC. If you have any additional questions, please submit a ticket to support@sinch.com.
Jul 16, 22:29 UTC
Monitoring - A fix has been implemented and we are closely monitoring. Additional information will be provided as soon as it is available.
Jul 16, 21:26 UTC
Identified - Sinch has identified the root cause of inbound call completion issues on the Elastic SIP Trunking Platform. We are actively working to restore services. Updates will be provided as soon as possible.

We appreciate your patience and apologize for any inconvenience.
Jul 16, 21:14 UTC
Delivery Issue USA - T-Mobile
Resolved - This incident has been resolved.

Incident Start Time: 2026-07-16 17:59 UTC

Incident Start Time: 2026-07-16 19:39 UTC
Jul 16, 21:46 UTC
Update - We are continuing to investigate this issue.
Jul 16, 20:15 UTC
Investigating - We are currently observing delivery issues towards USA - T-Mobile.

Incident Start Time: 2026-07-16 17:59 UTC

Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts
Jul 16, 18:16 UTC
Campaigns Application Maintenance
Completed - The scheduled maintenance has been completed.
Jul 16, 13:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 16, 12:30 UTC
Scheduled - Technical maintenance
Jul 16, 12:26 UTC
External Maintenance - T-Mobile United States
Completed - The scheduled maintenance has been completed.
Jul 16, 11:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 16, 03:01 UTC
Scheduled - T-Mobile USA 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: 2026-07-16 03:00 UTC
Maintenance end time: 2026-07-16 11:00 UTC
Jul 14, 18:25 UTC
Planned Maintenance - REST Traffic Database Upgrade
Completed - Dear Client,

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

Original Start Time: 2026-07-16 09:00 UTC
Original End Time: 2026-07-16 10:00 UTC

A new notice will be sent when / if this maintenance is rescheduled.
If you have any questions, please contact support@sinch.com.
Jul 16, 08:52 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 REST Traffic platform at the times specified below.

Type: Maintenance – REST Traffic Database Upgrade

Start Time: 2026-07-16 09:00 UTC
End Time: 2026-07-16 10:00 UTC

Impact: REST Traffic – EU. During the maintenance window, clients making GET requests may experience intermittent service interruptions, increased response times, or temporary request failures due to the database upgrade 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.
Jun 15, 15:35 UTC
External Maintenance - Toll-Free Number Provider (US and CA)
Completed - The scheduled maintenance has been completed.
Jul 16, 07:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 16, 03:00 UTC
Scheduled - We are writing to inform you that our Toll-Free Number Provider (US and CA) will be performing planned maintenance at the times specified below:

Start Time: 2026-07-16 03:00 UTC
End Time: 2026-07-16 07:00 UTC

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.
Jun 2, 00:58 UTC
Jul 15, 2026
Sinch Elastic SIP Trunking - Call Completion Issues
Resolved - All services are confirmed restored and this incident is now resolved.
Jul 15, 19:08 UTC
Monitoring - Elastic SIP Trunking service is now restored and we are monitoring. Services restored at approximately 15:10 UTC. We will continue to monitor and advise if any further issues are observed.
Jul 15, 15:31 UTC
Investigating - Sinch is currently investigating reports of call completion issues on the Elastic SIP Trunking Platform. 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.
Jul 15, 15:00 UTC
Delivery issues - Asia Cell Iraq
Resolved - This incident has been resolved.

Incident Start Time: 2026-07-15 13:01 UTC
Incident End Time: 2026-07-15 16:46 UTC
Jul 15, 17:08 UTC
Update - We are continuing to investigate this issue.
Jul 15, 16:56 UTC
Investigating - We are currently observing delivery issues in Iraq - Asia Cell

Incident Start Time: 2026-07-15 13:01 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.
Jul 15, 14:29 UTC
Campaigns Application Maintenance
Completed - The scheduled maintenance has been completed.
Jul 15, 15:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 15, 13:15 UTC
Scheduled - Internal improvement
Jul 15, 13:04 UTC
Delivery issues - Vodafone Italy
Resolved - This incident has been resolved.

Incident Start Time: 2026-07-14 22:11 UTC
Incident End Time: 2026-07-14 23:23 UTC
Jul 15, 00:05 UTC
Investigating - We are currently observing delivery issues in Italy - Vodafone

Incident Start Time: 2026-07-14 22:11 UTC

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

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.
Jul 14, 22:38 UTC
Jul 14, 2026
Sinch Scheduled Maintenance - Voice API (EU regions)
Completed - The scheduled maintenance has been completed.
Jul 14, 19:30 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 14, 19:00 UTC
Update - We will be undergoing scheduled maintenance during this time.
Jul 8, 21:17 UTC
Update - We will be undergoing scheduled maintenance during this time.
Jun 30, 13:38 UTC
Scheduled - Please note the scheduled maintenance has been postponed to July 14, 2026.

----
Sinch Voice API- EU Region will be undergoing maintenance to update SBCs [Session Border Controller] & SIP Registrars that will impact how inbound DID calls are delivered to your equipment over TCP and TLS. The Sinch SBCs will now consistently use source port 5060/5061 when initiating TCP/TLS connections to your PBX or SIP endpoint. Previously, these connections originated from a random source port. Additionally, we will be updating the default SIP TLS certificate from ECDSA to RSA to provide broader compatibility with VoIP equipment.

The scheduled work is not expected to impact services. This change improves consistency and predictability in how our signaling traffic reaches your equipment. This is being sent as a courtesy notice in the event that you experience issues with your service 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 for further information.
Jul 14, 19:00 UTC
Sinch Scheduled Maintenance - Elastic SIP Trunking (US) and Voice API (all regions except EU) -rescheduled from June 30
Completed - The scheduled maintenance has been completed.
Jul 14, 13:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 14, 12:00 UTC
Update - We will be undergoing scheduled maintenance during this time.
Jul 8, 21:16 UTC
Update - We will be undergoing scheduled maintenance during this time.
Jul 8, 21:14 UTC
Scheduled - Please note the scheduled maintenance originally scheduled for June 30, 2026 has been postponed to July 14, 2026.

--------

Sinch Elastic SIP Trunking will be undergoing maintenance to update SBCs [Session Border Controller] & SIP Registrars that will impact how inbound DID calls are delivered to your equipment over TCP and TLS. The Sinch SBCs will now consistently use source port 5060/5061 when initiating TCP/TLS connections to your PBX or SIP endpoint. Previously, these connections originated from a random source port. Additionally, we will be updating the default SIP TLS certificate from ECDSA to RSA to provide broader compatibility with VoIP equipment.

The scheduled work is not expected to impact services. This change improves consistency and predictability in how our signaling traffic reaches your equipment. This is being sent as a courtesy notice in the event that you experience issues with your service 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 for further information.
Jun 30, 13:56 UTC
DI SMS 365 (iSMS) | Operator Services | Application Maintenance | PCR Number # PCRSDI-12305
Completed - The scheduled maintenance has been completed.
Jul 14, 10:30 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 14, 05:30 UTC
Scheduled - Services: DI SMS 365 (iSMS)
PCR Number: PCRSDI-12305

Start Date and Time (GMT) :: 14th July 2026 5:30:00 Hrs.
End Date and Time (GMT) :: 14th July 2026 10:30 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.
Jul 13, 21:38 UTC
Jul 13, 2026
Delivery Issue USA - T-Mobile
Resolved - This incident has been resolved.

Incident Start Time: 2026-07-13 14:59 UTC
Incident End Time: 2026-07-13 18:34 UTC
Jul 13, 21:29 UTC
Update - We are continuing to work on a fix for this issue.
Jul 13, 18:24 UTC
Identified - The issue has been identified and a fix is being implemented.
Jul 13, 17:16 UTC
Investigating - We are currently observing delivery issues towards USA - T-Mobile.

Incident Start Time: 2026-07-13 14:59 UTC

Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts
Jul 13, 15:37 UTC
Sinch Scheduled Maintenance: Verification API
Completed - The scheduled maintenance has been completed.
Jul 13, 12:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 13, 08:00 UTC
Scheduled - Dear Customer,

We are writing to inform you that we have scheduled routine maintenance for our Verification service.

Maintenance start time: 2026-07-13 08:00 UTC
Maintenance end time: 2026-07-13 12:00 UTC

Impact: Customers may experience Minor disruptions 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.
Jun 30, 13:41 UTC
Jul 12, 2026

No incidents reported.

Jul 11, 2026

No incidents reported.

Jul 10, 2026
Delivery Issue Paraguay - Tigo
Resolved - This incident has been resolved.

Incident Start Time: 2026-07-10 19:09 UTC
Incident End Time: 2026-07-10 21:05 UTC
Jul 10, 21:40 UTC
Investigating - We are currently observing delivery issues in Paraguay - Tigo

Incident Start Time: 2026-07-10 19:09 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.
Jul 10, 19:33 UTC
Campaigns Application Maintenance
Completed - The scheduled maintenance has been completed.
Jul 10, 09:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 10, 08:00 UTC
Scheduled - Basic RCS Preparatory work
Jul 10, 07:50 UTC
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