SMS Delivery Delays and Failures to Viettel in Vietnam

What to do

• Check whether you use Twilio SMS, APAC in apac. Check your stack

  Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.

• Confirm your retries, queues and scheduled jobs caught up after the 5h 25m it lasted.

  Anything that failed between 2026-03-22 07:29 UTC and 2026-03-22 12:54 UTC may need a replay.

• Subscribe to Twilio's feed to hear about the next one first. RSS feed

  https://down.guide/feed?provider=twilio works in Slack (/feed subscribe), Discord feed bots and any RSS reader.

Updates from Twilio 4

1. investigatingMar 22, 2026, 7:29 AM UTC

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

   provider

2. investigatingMar 22, 2026, 8:30 AM UTC

   We are experiencing SMS delivery delays when sending messages to Viettel in Vietnam. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 2 hour or as soon as more information becomes available.

   provider

3. investigatingMar 22, 2026, 10:31 AM UTC

   We are experiencing SMS delivery delays when sending messages to Viettel in Vietnam. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.

   provider

4. resolvedMar 22, 2026, 12:54 PM UTC

   This incident has been resolved.

   provider

Corrections

None so far.

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