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        SMS Delivery Delays & Failures to Multiple networks in Yemen (421-01, 421-02, 421-04).

        Incident Report for Twilio

        Resolved

        We are no longer experiencing SMS Delivery Delays & Failures to Multiple networks in Yemen (421-01, 421-02, 421-04). This incident has been resolved.
        Posted Feb 08, 2026 - 20:26 PST

        Update

        We are observing recovery in SMS Delivery Delays & Failures to Multiple networks in Yemen (421-01, 421-02, 421-04). We will continue monitoring the service to ensure a full recovery. We will provide another update in 2 hours, or as soon as more information becomes available.
        Posted Feb 08, 2026 - 18:33 PST

        Monitoring

        We are observing recovery in SMS Delivery Delays & Failures to Multiple networks in Yemen (421-01, 421-02, 421-04). We will continue monitoring the service to ensure a full recovery. We will provide another update in 2 hours, or as soon as more information becomes available.
        Posted Feb 08, 2026 - 16:33 PST

        Update

        We continue experiencing SMS Delivery Delays & Failures to Multiple networks in Yemen (421-01, 421-02, 421-04). Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 2 hours, or as soon as more information becomes available.
        Posted Feb 08, 2026 - 14:50 PST

        Investigating

        We are experiencing SMS Delivery Delays & Failures to Multiple networks in Yemen (421-01, 421-02, 421-04). Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 1 hours, or as soon as more information becomes available.
        Posted Feb 08, 2026 - 13:49 PST
        This incident affected: CARRIER NETWORK (SMS, Middle East & Africa).