Sinch incident

Delivery Issue United States - AT&T

Resolved after 5 hours 40 minutes, affecting SMS - US - 10DLC, on May 7, 2026.

resolved May 07, 2026, 10:39 PM UTC

This incident has been resolved. Estimated Incident Start Time: 2026-05-06 14:00 UTC Incident End Time: 2026-05-07 21:50 UTC

Started
May 07, 2026, 04:58 PM UTC
Resolved
May 07, 2026, 10:39 PM UTC
Duration
5h 40m
Detected by Pingoru
May 07, 2026, 04:58 PM UTC

Affected components

SMS - US - 10DLC

Update timeline

  1. investigating May 07, 2026, 04:58 PM UTC

    We are currently observing delivery issues towards United States - AT&T Estimated Incident Start Time: 2026-05-06 14:00 UTC Impact: Delayed delivery for concatenated 10DLC MT messages submitted towards AT&T US. We will update as soon as we have more information. If you have any questions, please contact [email protected].

  2. investigating May 07, 2026, 07:04 PM UTC

    We are continuing to investigate this issue.

  3. monitoring May 07, 2026, 09:52 PM UTC

    A fix has been implemented and we are monitoring the results.

  4. resolved May 07, 2026, 10:39 PM UTC

    This incident has been resolved. Estimated Incident Start Time: 2026-05-06 14:00 UTC Incident End Time: 2026-05-07 21:50 UTC

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