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

        Incident Report for Twilio

        Update

        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.
        Posted Oct 02, 2026 - 03:02 PDT

        Update

        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.
        Posted Oct 02, 2026 - 01:01 PDT

        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.
        Posted Oct 01, 2026 - 23:56 PDT
        This incident affects: CARRIER NETWORK (Verify Silent Network Auth).