# Silent Network Authentication (SNA) Failure Increase on AT&T in United States

- Provider: [Twilio](https://down.guide/twilio)
- Level: confirmed
- Impact: Degraded
- lasted 8h 9m
- started 2026-10-02 06:56 UTC
- Verify Silent Network Auth
- us
- id: DWN-35374702ee
- Official page: https://stspg.io/y9tmbssnldtj

## Updates from Twilio
### 2026-10-02 06:56 UTC: investigating
Twilio customers may be experiencing verification failures during API transactions for Silent Network Authentication (SNA) on AT&T in the United States. Our team is actively investigating the issue. API transactions may temporarily fail over to secondary methods like SMS OTP. We will provide another update in 1 hour or as soon as more information becomes available.

### 2026-10-02 08:01 UTC: investigating
Twilio customers may be experiencing verification failures during API transactions for Silent Network Authentication (SNA) on AT&T in the United States. Our team is actively investigating the issue. API transactions may temporarily fail over to secondary methods like SMS OTP. We will provide another update in 2 hours or as soon as more information becomes available.

### 2026-10-02 10:02 UTC: investigating
Twilio customers may be experiencing verification failures during API transactions for Silent Network Authentication (SNA) on AT&T in the United States. Our team is actively investigating the issue. API transactions may temporarily fail over to secondary methods like SMS OTP. We will provide another update in 4 hours or as soon as more information becomes available.

### 2026-10-02 10:40 UTC: monitoring
We have observed recovery in API transactions for Silent Network Authentication (SNA) on AT&T 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.

### 2026-10-02 12:40 UTC: monitoring
We have observed recovery in API transactions for Silent Network Authentication (SNA) on AT&T in the United States and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.

### 2026-10-02 15:04 UTC: resolved
The incident has been resolved and API transactions for Silent Network Authentication (SNA) on AT&T in the United States are operating normally.

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