Outage in Telesign

Quality degradation - United States (US) - ATT Mobility (310/016;030;150;170;280;380;410;670) and T-MOBILE (310/023;024;025;026;053;120;160;200;210;220;230;240;250;260;270;310;490;530;580;660;770;800;830)

Resolved Minor
October 28, 2025 - Started 2 days ago - Lasted about 2 hours
Official incident page

Incident Report

Issue: US/CA Operator - T-MOBILE (310/023;024;025;026;053;120;160;200;210;220;230;240;250;260;270;310;490;530;580;660;770;800;830) and ATT Mobility (310/016;030;150;170;280;380;410;670) 10DLC degradation Start Time: 8:24 AM PST - 10/28/25 End Time: Ongoing Summary: We currently experience 10 DLC quality degradation toward United States (US) ATT Mobility (310/016;030;150;170;280;380;410;670) and T-MOBILE (310/023;024;025;026;053;120;160;200;210;220;230;240;250;260;270;310;490;530;580;660;770;800;830). 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 support@telesign.com. SF 01078616

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Latest Updates ( sorted recent to last )
RESOLVED 2 days ago - at 10/28/2025 05:23PM

Issue: US/CA Operator - T-MOBILE (310/023;024;025;026;053;120;160;200;210;220;230;240;250;260;270;310;490;530;580;660;770;800;830) and ATT Mobility (310/016;030;150;170;280;380;410;670) 10DLC degradation

Start Time: 8:24AM PDT - 10/28/25
End Time: 9:34AM PDT - 10/28/25

Summary:

The issue causing SMS delivery quality degradation toward United States (US) operators AT&T Mobility (310/016;030;150;170;280;380;410;670) and T-Mobile (310/023;024;025;026;053;120;160;200;210;220;230;240;250;260;270;310;490;530;580;660;770;800;830) has been resolved.

SMS messages toward these operators are now being delivered normally.

Telesign appreciates your patience and understanding during the service interruption.

If you have any questions, please contact support@telesign.com

INVESTIGATING 2 days ago - at 10/28/2025 04:00PM

Issue: US/CA Operator - T-MOBILE (310/023;024;025;026;053;120;160;200;210;220;230;240;250;260;270;310;490;530;580;660;770;800;830) and ATT Mobility (310/016;030;150;170;280;380;410;670) 10DLC degradation

Start Time: 8:24 AM PST - 10/28/25
End Time: Ongoing

Summary:

We currently experience 10 DLC quality degradation toward United States (US) ATT Mobility (310/016;030;150;170;280;380;410;670) and T-MOBILE (310/023;024;025;026;053;120;160;200;210;220;230;240;250;260;270;310;490;530;580;660;770;800;830).
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 support@telesign.com.

SF 01078616

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