Outage in Telesign

Operator Service Alert - Quality degradation for 10DLC - United States (US) - 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) - 3/8/26

Resolved Minor

March 08, 2026 - Started 1 day ago - Lasted about 1 hour
Official incident page

Incident Report

Summary AI Generated

Telesign experienced quality degradation affecting 10DLC SMS traffic to T-Mobile networks in the United States, causing message delivery delays and difficulties for customers sending SMS through 10DLC services. The incident lasted approximately 1 hour and 41 minutes from 12:18 PM to 1:59 PM PST on March 8, 2026. The issue was resolved after Telesign worked with carrier partners, and T-Mobile end users were no longer experiencing SMS delivery delays.

Issue: US Operator - United States (US) - 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) quality degradation for 10dlc Date: 3/8/26 Start Time: 12:18PM PST End Time: / Summary: We currently experience quality degradation toward United States T-MOBILE for 10DLC traffic only. SMS messages sent with 10DLC SID 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 01140601

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Latest Updates ( sorted recent to last )

RESOLVED 1 day ago - at 03/08/2026 09:37PM

Start Time: 12:18PM PST
End Time: 1:59PM PST

We received notification that the network issues previously reported by United States (US) - 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) from United States (US) for 10DLC traffic have been resolved. United States (US) - 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) end users should no longer experience delays receiving SMS messages as all services are back to functioning properly.

SF 01140601

INVESTIGATING 1 day ago - at 03/08/2026 08:18PM

Issue: US Operator - United States (US) - 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) quality degradation for 10dlc

Date: 3/8/26
Start Time: 12:18PM PST
End Time: /

Summary:

We currently experience quality degradation toward United States T-MOBILE for 10DLC traffic only.
SMS messages sent with 10DLC SID 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 01140601

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