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Telesign System: Operator Service Alert - United States (US) - ATT Mobility (310/016;030;150;170;280;380;410;670) - 09/21/26
Telesign System · telesign.comImpact: minorResolved2026-09-22 06:36 UTC
Public — what happened
Summary
Date: 09/22/26
Start Time: 14:00 PM PST
End Time: 15:19 PM PST
We received notification that the network issues previously reported by United States (US) - ATT Mobility (310/016;030;150;170;280;380;410;670) from United States (US) have been resolved. ATT Mobility (310/016;030;150;170;280;380;410;670) 10DLC end users should no longer experience delays receiving SMS messages as all services are back to functioning properly.
On behalf of the Operator, we apologize for any inconvenience this issue may have caused. If you have additional questions, please feel free to contact [email protected].
SF 01239806
Timeline
- Started — 2026-09-21 21:02 UTC
- Last update — 2026-09-22 06:36 UTC
- Resolved — 2026-09-22 06:36 UTC
With SquidGrid — where it starts on the route
Independent path health
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