[SNOC] SMS Delivery Delays to AT&T Network in the United States via Subset of Long Codes and Short Codes

Incident Report for Twilio

Resolved

This incident has been resolved.

Posted Dec 11, 2025 - 05:28 PST

Monitoring

We are observing recovery of SMS Delivery Delays when sending messages to AT&T Network in the United States via Subset of Long Codes and Short Codes. Our engineers are continuing to monitor the issue to ensure it is resolved. We will provide another update in 2 hours or as soon as more information becomes available.

Posted Dec 11, 2025 - 03:19 PST

Update

We are continuing to experience SMS Delivery Delays when sending messages to AT&T Network in the United States via Subset of Long Codes and Short Codes. 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 Dec 11, 2025 - 01:21 PST

Investigating

We are experiencing SMS Delivery Delays when sending messages to AT&T Network in the United States via Subset of Long Codes and Short Codes. 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 Dec 11, 2025 - 00:21 PST

This incident affected: CARRIER NETWORK (SMS Long Code, North America, SMS Short Code, North America).