Twilio incident: Silent Network Authentication (SNA) Failure Increase on AT&T in United States

Affected components

• Verify Silent Network Auth

1. resolvedOct 20, 2026, 08:45 UTC

   The incident has been resolved and API transactions for Silent Network Authentication (SNA) on AT&T in the United States are operating normally.

2. monitoringOct 20, 2026, 08:45 UTC

   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.

3. monitoringOct 20, 2026, 06:44 UTC

   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.

4. identifiedOct 20, 2026, 05:39 UTC

   Twilio customers may be experiencing verification failures during API transactions for Silent Network Authentication (SNA) on AT&T in the United States. API transactions may temporarily fail over to secondary methods like SMS OTP. 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.

5. investigatingOct 20, 2026, 05:28 UTC

   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.

What APIStatus.watch saw

Our 5-minute checks didn't record a change in Twilio's overall status around this incident. Smaller or regional incidents often leave a provider's overall status green.

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How often does Twilio have incidents?

Twilio reported 496 incidents in the last 90 days, 2 of them major or critical. A typical incident lasted 5h 54m. See Twilio's uptime and incident history