Sinch experienced a delivery issue affecting AT&T traffic in the USA from 05:18 to 09:44 UTC on October 7, 2026, lasting approximately 4.4 hours. SMS (ShortCode and 10DLC) and MMS services were impacted, with users experiencing delayed inbound and outbound messages, as well as missing or late delivery receipts. The incident was resolved by 10:42 UTC with no further action required.
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This incident has been resolved.
Incident Start Time: 2026-10-07 05:18 UTC
Incident End Time: 2026-10-07 09:44 UTC
We are continuing to investigate this issue.
We are currently observing delivery issues in USA - AT&T.
Incident Start Time: 2026-10-07 05:18 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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