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        Sms Delivery Delays to Cingular Wireless (AT&T) in United States of America via Subset of Longcodes

        Incident Report for Twilio

        Resolved

        We are no longer experiencing SMS delivery delays when sending messages to Cingular Wireless (AT&T) in United States of America via Subset of Longcodes. This incident has been resolved.
        Posted Apr 04, 2026 - 04:53 PDT

        Investigating

        We are experiencing SMS delivery delays when sending messages to Cingular Wireless (AT&T) in United States of America via Subset of Longcodes. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
        Posted Apr 04, 2026 - 03:59 PDT
        This incident affected: CARRIER NETWORK (SMS Long Code, North America).
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