3 - Ireland has scheduled a maintenance.
Impact: Clients may experience delayed or failed MT/MO traffic towards 3 Ireland.
Maintenance start time: 2026-03-30 21:00 UTC
Maintenance end time: 2026-03-31 06:00 UTC
Posted on
Mar 20, 2026 - 18:35 UTC
Update -
The Infocomm Media Development Authority (IMDA) of Singapore has mandated the use of TLS (Transport Layer Security) 1.3 for all API connections handling A2P SMS traffic, effective April 1, 2026.
To ensure compliance and prevent any possible service disruption, all customers sending SMS traffic to Singapore must update their systems to support TLS 1.3 before this deadline.
Sinch Platform Readiness:
Our commitment is to provide a secure and resilient infrastructure.
We have already enabled full TLS 1.3 support across our global A2P SMSC infrastructure.
The final site, EU3 (IP 93.158.78.4) is now fully complaint to TLS 1.3 since March 17th, 2026.
Required Customer Action:
Verify Your Configuration: We strongly urge you to begin transitioning your systems to use TLS 1.3 for connections to Sinch immediately.
Compliance Deadline:
In accordance with IMDA requirements, connections using TLS 1.2 for traffic to Singapore should not be supported after April 1, 2026. To avoid any possible interruption of service to Singapore, you must complete your transition before this date.
Our team is ready to help ensure your transition is smooth and seamless.
Please do not hesitate to contact our customer support or account manager if you have any questions or require assistance.
Mar 18, 2026 - 08:49 UTC
Scheduled -
The Infocomm Media Development Authority (IMDA) of Singapore has mandated the use of TLS (Transport Layer Security) 1.3 for all API connections handling A2P SMS traffic, effective April 1, 2026.
To ensure compliance and prevent any possible service disruption, all customers sending SMS traffic to Singapore must update their systems to support TLS 1.3 before this deadline.
Sinch Platform Readiness:
Our commitment is to provide a secure and resilient infrastructure.
We have already enabled full TLS 1.3 support across our global A2P SMSC infrastructure. The final site, EU3 (IP 93.158.78.4), will be fully compliant to TLS 1.3 by end of February 2026, well ahead of the deadline.
Required Customer Action:
Verify Your Configuration: We strongly urge you to begin transitioning your systems to use TLS 1.3 for connections to Sinch immediately.
Compliance Deadline:
In accordance with IMDA requirements, connections using TLS 1.2 for traffic to Singapore should not be supported after April 1, 2026. To avoid any possible interruption of service to Singapore, you must complete your transition before this date.
Our team is ready to help ensure your transition is smooth and seamless.
Please do not hesitate to contact our customer support or account manager if you have any questions or require assistance.
Nov 04, 2025 - 12:48 UTC
United States - Verizon has scheduled a maintenance.
Impact: SMS Long Code, SMS Short Code & SMS Toll-Free.
Maintenance start time: 2026-04-03 08:00 UTC
Maintenance end time: 2026-04-03 14:00 UTC
Posted on
Mar 18, 2026 - 13:26 UTC
Dear Client,
Sinch will be performing a scheduled maintenance on our 10DLC Product at the times specified below.
As part of this update, clients may see a delays or failures during delivery from 10DLC Numbers sending to US Devices.
Start Time: 2026-04-07 10:00 UTC
End Time: 2026-04-07 11:00 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
Mar 19, 2026 - 15:43 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: 2026-04-13 04:00 UTC
Maintenance End Time: 2026-04-13 10:00 UTC
Posted on
Mar 23, 2026 - 21:07 UTC