Outage in Telesign
Quality degradation - China (CN) - Multiple MNOs - 9/21/26
Resolved MinorIncident Report
Summary AI Generated
On September 21, 2026, Telesign experienced SMS delivery degradation affecting multiple mobile network operators (MNOs) in China, beginning at 2:05 PM PDT. Customers sending SMS messages to affected networks encountered difficulties with message delivery. The issue was resolved by 2:43 PM PDT, with all services restored to normal functioning.
Date: 9/21/26
Start Time: 2:05 PM PDT
End Time: Ongoing
Summary:
We currently experience quality degradation toward China (CN) Multiple MNOs. Customers that send SMS messages to Multiple MNOs users may notice a difficulties in message delivery.
Our competent teams are working on solving this issue.
We'd like to apologize for any inconvenience and appreciate your patience during this service window.
If you have any questions, please contact us at support@telesign.com.
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Latest Updates ( sorted recent to last )
RESOLVED
about 5 hours ago - at 09/21/2026 11:21AM
Start Time: 2:05 PM PDT - 9/21/26
End Time: 2:43 PM PDT - 9/21/26
Network issues previously reported for Multiple MNOs from China (CN) have been resolved. Multiple MNOs end users should no longer experience delays receiving SMS messages as all services are back to functioning properly.
SF 01239390
IDENTIFIED
about 7 hours ago - at 09/21/2026 09:15AM
Date: 9/21/26
Start Time: 2:05 PM PDT
End Time: Ongoing
Summary:
We currently experience quality degradation toward China (CN) Multiple MNOs. Customers that send SMS messages to Multiple MNOs users may notice a difficulties in message delivery.
Our competent teams are working on solving this issue.
We'd like to apologize for any inconvenience and appreciate your patience during this service window.
If you have any questions, please contact us at support@telesign.com.
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