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        SMS Delivery Failures from a Subset of Toll Free Numbers to AT&T Network in the United States

        Incident Report for Twilio

        Resolved

        Twilio experienced SMS delivery failures from a subset of toll free numbers to AT&T Network in the United States for 219 minutes between 5:45 and 9:24 Pacific Time on 08/09/2026. The issue has now been resolved.
        Posted Aug 12, 2026 - 15:19 PDT
        This incident affected: ZIPWHIP MESSAGING (SMS Toll-Free, North America) and CARRIER NETWORK (SMS Toll-Free, North America).
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