Zingle incident
SMS Delivery Failures from a Subset of Twilio Short Codes to AT&T United States
Resolved after 4 days 16 hours, on June 11, 2026.
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.
Update timeline
- monitoring 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.
- monitoring 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.
- monitoring 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.
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