Outage in Twilio

SMS Delivery Delays and Failures to Viettel Network in Vietnam

Minor
October 22, 2025 - Started about 5 hours ago
Official incident page

Incident Report

Our monitoring systems have detected a potential issue with SMS Delivery Failures to Viettel Network in Vietnam. Our engineering team has been alerted and is actively investigating. We will update as soon as we have more information.
Components affected
Twilio SMS, APAC

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Latest Updates ( sorted recent to last )
MONITORING 16 minutes ago - at 10/22/2025 10:38PM

We are observing successful SMS delivery to Viettel Network in Vietnam. We will continue to monitor to ensure full service recovery. We expect to provide another update in 2 hours or as soon as more information becomes available.

INVESTIGATING about 2 hours ago - at 10/22/2025 09:18PM

We continue to experience SMS delivery delays and failures to Viettel Network in Vietnam. Our engineers are working with our carrier partner to resolve the issue. We expect to provide another update in 4 hour or as soon as more information becomes available.

INVESTIGATING about 4 hours ago - at 10/22/2025 07:16PM

We continue to experience SMS delivery failures to Viettel Network in Vietnam. Our engineers are working with our carrier partner to resolve the issue. We expect to provide another update in 2 hour or as soon as more information becomes available.

INVESTIGATING about 5 hours ago - at 10/22/2025 06:21PM

We are experiencing SMS delivery failures to Viettel Network in Vietnam. Our engineers are working with our carrier partner to resolve the issue. We expect to provide another update in 1 hour or as soon as more information becomes available.

INVESTIGATING about 5 hours ago - at 10/22/2025 06:16PM

Our monitoring systems have detected a potential issue with SMS Delivery Failures to Viettel Network in Vietnam. Our engineering team has been alerted and is actively investigating. We will update as soon as we have more information.

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