TeleSign incident

Operator Alert - China (CN) - China Unicom (460/01;06;09)

Minor Resolved View vendor source →

TeleSign experienced a minor incident on May 26, 2026 affecting China, lasting 8h 50m. The incident has been resolved; the full update timeline is below.

Started
May 26, 2026, 03:38 PM UTC
Resolved
May 27, 2026, 12:29 AM UTC
Duration
8h 50m
Detected by Pingoru
May 26, 2026, 03:38 PM UTC

Affected components

China

Update timeline

  1. investigating May 26, 2026, 03:38 PM UTC

    Start Time: 8:30 AM PDT - 05/26/26 End Time: Ongoing We received notification that China Unicom (460/01;06;09) from China (CN) is currently experiencing network issues, and this may cause a delay in the delivery of SMS messages. We will inform you once the operator has come to a resolution. SF 01177505

  2. resolved May 27, 2026, 12:29 AM UTC

    Start Time: 8:30 AM PDT - 05/26/26 End Time: 4:25 PM PDT - 05/26/26 We received notification that the network issues previously reported by China Unicom (460/01;06;09) from China (CN) have been resolved. China Unicom (460/01;06;09) end users should no longer experience delays receiving SMS messages as all services are back to functioning properly. SF 01177505