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        AT&T RCS Messages are Failing With 403 HTML Error

        Incident Report for Twilio

        Resolved

        This incident has been mitigated, for further updates relating to this please see incident: "SMS and RCS Delivery Failures on AT&T Network".
        Posted Dec 11, 2025 - 02:25 PST

        Investigating

        Our engineers are investigating an issue where AT&T RCS Messages are failing With 403 HTML errors. We expect to provide another update in 30 minutes or as soon as more information becomes available.
        Posted Dec 11, 2025 - 01:45 PST
        This incident affected: PROGRAMMABLE MESSAGING (RCS Messaging).
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