# SMS Delivery Failures from a Subset of Twilio Short Codes to AT&T United States

- Provider: [Twilio](https://down.guide/twilio)
- Level: confirmed
- Impact: Degraded
- lasted 2h 40m
- started 2026-06-11 17:52 UTC
- SMS Short Code, North America
- us
- id: DWN-ed5247b415
- Official page: https://stspg.io/gnhwjm49zllb

## Updates from Twilio
### 2026-06-11 17:52 UTC: investigating
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.

### 2026-06-11 18:01 UTC: identified
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.

### 2026-06-11 18:30 UTC: monitoring
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.

### 2026-06-11 20:32 UTC: resolved
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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