SMS, MMS and Verify API Delivery Delays to AT&T USA

Incident Report for Twilio

Resolved

We are no longer experiencing delivery delays for SMS, MMS and Verify API messaging to and from AT&T end user subscribers. This incident has been resolved.

Posted Feb 22, 2024 - 16:40 PST

Update

We are still observing a recovery in delivery ratios levels for SMS, MMS and Verify API messaging to and from AT&T end user subscribers. We will continue monitoring the service to ensure a full recovery. We will provide another update in 2 hours or as soon as more information becomes available.

Posted Feb 22, 2024 - 14:43 PST

Monitoring

We are observing a recovery in delivery ratios levels for SMS, MMS and Verify API messaging to and from AT&T end user subscribers. We will continue monitoring the service to ensure a full recovery. We will provide another update in 2 hours or as soon as more information becomes available.

Posted Feb 22, 2024 - 12:43 PST

Update

We are observing delivery ratios nearing normal levels for SMS, MMS and Verify API messaging to and from AT&T end user subscribers. We remain in close communication with AT&T as they continue to manage recovery through careful load balancing and capacity management to ensure smooth recovery. We will provide another update in 2 hours, or as soon as more information becomes available.

Posted Feb 22, 2024 - 10:45 PST

Update

We are seeing recovery for SMS, MMS and Verify API messaging that was impacted by the major incident on our carrier partner AT&T Network. We are in close communication with AT&T as they continue to manage recovery through careful load balancing and capacity management to ensure smooth recovery. We will provide another update in 2 hours, or as soon as more information becomes available.

Posted Feb 22, 2024 - 08:45 PST

Update

We are continuing our investigation and have discovered Verify API message delivery is affected by the SMS and MMS delivery delays to AT&T Network.

Posted Feb 22, 2024 - 07:11 PST

Update

We are continuing to experience SMS and MMS delivery delays when sending messages to AT&T network in the USA. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 2 hours, or as soon as more information becomes available.

Posted Feb 22, 2024 - 06:36 PST

Update

We are continuing to experience MMS/SMS delivery delays when sending messages to the AT&T network in the USA. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 2 hours, or as soon as more information becomes available.

Posted Feb 22, 2024 - 05:55 PST

Update

We are experiencing MMS/SMS delivery delays when sending messages to the AT&T network in the USA. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 1 hour, or as soon as more information becomes available.

Posted Feb 22, 2024 - 05:13 PST

Investigating

Posted Feb 22, 2024 - 05:05 PST

This incident affected: CARRIER NETWORK (SMS Long Code, North America, MMS Long Code, North America, SMS Short Code, North America, MMS Short Code, North America, SMS Toll-Free, North America, MMS Toll-Free, North America) and ACCOUNT SECURITY (Verify).