Delivery Issue United States - AT&T

Incident Report for Sinch

Resolved

This incident has been resolved.

Incident Start Time: 2026-01-19 10:47 UTC
Incident End Time: 2026-01-20 06:27 UTC

Posted Jan 20, 2026 - 06:42 UTC

Update

We are continuing to investigate this issue.

Posted Jan 19, 2026 - 21:42 UTC

Update

We are continuing to investigate this issue.

Posted Jan 19, 2026 - 16:11 UTC

Update

We are continuing to investigate this issue.

Posted Jan 19, 2026 - 13:06 UTC

Investigating

We are currently observing delivery issues for a small subset of messages towards AT&T US.

Incident Start Time: 2026-01-19 10:47 UTC
Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts

We will update as soon as we have more information.

Posted Jan 19, 2026 - 11:58 UTC

This incident affected: External Connectivity (SMS - US - ShortCode, SMS - US - Toll Free, SMS - US - 10DLC).