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        SMS Delivery Failures from a Subset of Twilio Toll-Free Numbers to Multiple Networks in United States

        Incident Report for Twilio

        Resolved

        We have completed our investigation and determined that this event did not result in any customer impact. All systems are operating normally.
        Posted May 12, 2026 - 07:58 PDT

        Monitoring

        Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Toll-Free Numbers to the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
        Posted May 12, 2026 - 07:50 PDT

        Update

        Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Toll-Free Numbers to the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
        Posted May 12, 2026 - 03:49 PDT

        Update

        Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Toll-Free Numbers to the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
        Posted May 12, 2026 - 01:43 PDT

        Identified

        Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Toll-Free Numbers to the United States. 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.
        Posted May 12, 2026 - 00:41 PDT

        Investigating

        Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Toll-Free Numbers to the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
        Posted May 12, 2026 - 00:03 PDT
        This incident affected: ZIPWHIP MESSAGING (SMS Toll-Free, North America).