Twilio incident
SMS Delivery Failures from a Subset of Twilio Short Codes to AT&T United States
Twilio experienced a minor incident on June 11, 2026 affecting SMS Short Code, North America, lasting 2h 39m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Jun 11, 2026, 05:52 PM UTC
Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Short Codes to AT&T network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
- identified Jun 11, 2026, 06:01 PM UTC
Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Short Codes to AT&T network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
- monitoring Jun 11, 2026, 06:30 PM UTC
We have observed a recovery in SMS delivery from a subset of Twilio Short Codes to AT&T network subscribers in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
- resolved Jun 11, 2026, 08:32 PM UTC
The incident has been resolved and SMS delivery from a subset of Twilio Short Codes to AT&T network subscribers in the United States is operating normally.