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Twilio: SMS Delivery Receipt Delays from a Subset of Twilio Long Codes to AT&T United States

MinorStatus: resolvededitedStarted Resolved (3.3 h)5 updatesstatus.twilio.com (opens in new tab)

Affected components: CARRIER NETWORK - SMS Long Code, North AmericaSMS Long Code, North America

Timeline of updates

  1. investigating

    Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Long Codes to AT&T network subscribers in the United States. Our team is actively investigating this issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 1 hour or as soon as more information becomes available.

  2. investigating

    Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Long Codes to AT&T network subscribers in the United States. Our team is actively investigating this issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 2 hours or as soon as more information becomes available.

  3. identified

    Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Long Codes to AT&T network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 1 hour or as soon as more information becomes available.

  4. monitoring

    We have observed a recovery in SMS delivery receipts from a subset of Twilio Long Codes to AT&T network subscribers in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.

  5. resolved

    The incident has been resolved and SMS delivery receipts from a subset of Twilio Long Codes to AT&T network subscribers in the United States are operating normally.

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