Outage in Sinch
Delivery Issue US - AT&T
Resolved MinorIncident Report
Summary AI Generated
Sinch experienced delivery issues with AT&T in the US affecting their SMS 10DLC service, causing delayed mobile-terminated and mobile-originated messages along with missing or late delivery receipts. The incident lasted 12.4 hours from April 29, 2026 at 19:35 UTC until May 1, 2026 at 01:30 UTC and has been resolved.
We are currently observing delivery issues in US - AT&T
Incident Start Time: 2026-04-29 19:35 UTC
Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts
We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.
Components affected
Sinch SMS - US - 10DLCTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
RESOLVED
about 10 hours ago - at 05/01/2026 05:38AM
This incident has been resolved.
Incident Start Time: 2026-04-29 19:35 UTC
Incident End Time: 2026-05-01 01:30 UTC
INVESTIGATING
about 18 hours ago - at 04/30/2026 09:41PM
We are continuing to investigate this issue.
INVESTIGATING
about 21 hours ago - at 04/30/2026 06:48PM
We are continuing to investigate this issue.
INVESTIGATING
about 22 hours ago - at 04/30/2026 05:18PM
We are currently observing delivery issues in US - AT&T
Incident Start Time: 2026-04-29 19:35 UTC
Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts
We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.
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