Outage in Telesign

Operator Alert - Vietnam (VN) - Viettel Mobile (452/04) - 03/26/2026

Resolved Minor

March 26, 2026 - Started about 5 hours ago - Lasted about 2 hours
Official incident page

Incident Report

Summary AI Generated

Telesign experienced SMS delivery delays to Viettel Mobile (452/04) users in Vietnam due to network issues with the mobile operator. The incident lasted from 2:48 AM PDT to 3:56 AM PDT on March 26, 2026, affecting SMS message delivery times for approximately 1 hour and 8 minutes. The issue was resolved when Viettel Mobile restored their network services, returning SMS delivery to normal functionality.

Start Time: 2:48 AM PDT - 03/26/2026 End Time: Ongoing We received notification that Viettel Mobile (452/04) from Vietnam (VN) 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 01149211

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Latest Updates ( sorted recent to last )

RESOLVED about 4 hours ago - at 03/26/2026 11:39AM

Start Time: 2:48 AM PDT - 03/26/2026
End Time: 3:56 AM PDT - 03/26/2026

We received notification that the network issues previously reported by Viettel Mobile (452/04) from Vietnam (VN) have been resolved. Viettel Mobile (452/04) end users should no longer experience delays receiving SMS messages as all services are back to functioning properly.

SF 01149211

INVESTIGATING about 5 hours ago - at 03/26/2026 10:05AM

Start Time: 2:48 AM PDT - 03/26/2026
End Time: Ongoing

We received notification that Viettel Mobile (452/04) from Vietnam (VN) 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 01149211

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