Twilio incident
SMS Delivery Delays from a Subset of Twilio Long Codes to AT&T United States
Twilio experienced a minor incident on July 15, 2026 affecting SMS Long Code, North America, lasting 4h 13m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Jul 15, 2026, 04:57 PM UTC
Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Long 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 Jul 15, 2026, 05:16 PM UTC
Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Long 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.
- identified Jul 15, 2026, 06:16 PM UTC
Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Long 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 2 hours or as soon as more information becomes available.
- monitoring Jul 15, 2026, 07:07 PM UTC
We have observed a recovery in SMS delivery from a subset of Twilio Long 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 Jul 15, 2026, 09:11 PM UTC
The incident has been resolved and SMS delivery from a subset of Twilio Long Codes to AT&T network subscribers in the United States is operating normally.