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Telesign System: Quality degradation - United States (US) - ATT Mobility (310/016;030;150;170;280;380;410;670)
Telesign System · telesign.comImpact: minorResolved2026-09-18 00:48 UTC
Public — what happened
Summary
Issue: US Operator - ATT Mobility (310/016;030;150;170;280;380;410;670) -10 DLC only Quality degradation
Date: 08/17/26
Start Time: 5:12 PM PST
End Time: Ongoing
Summary:
We currently experience quality degradation toward United States (US) - ATT Mobility (310/016;030;150;170;280;380;410;670) -10 DLC only.
SMS messages towards these operator(s) may face delays or difficulties in delivery.
Telesign is engaged with carrier partners for updates on resolution. We'd like to apologize for any inconvenience and appreciate your patience during this service interruption.
If you have any questions, please contact [email protected].
Timeline
- Started — 2026-09-18 00:48 UTC
- Last update — 2026-09-18 00:48 UTC
- Resolved — 2026-09-18 10:44 UTC
With SquidGrid — where it starts on the route
Independent path health
The status page is the symptom. SquidGrid measures the paths that reach Telesign System against their own baselines — whether the routes carrying your traffic degraded, at which handoff, and who owns that stretch.
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