SMS Delivery Delays From a Subset of Twilio Short Codes to AT&T United States

What to do

• Check whether you use Twilio SMS Short Code, North America in us. Check your stack

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• Confirm your retries, queues and scheduled jobs caught up after the 1h 41m it lasted.

  Anything that failed between 2026-03-17 14:25 UTC and 2026-03-17 16:06 UTC may need a replay.

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

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Updates from Twilio 3

1. investigatingMar 17, 2026, 2:25 PM UTC

   Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to AT&T network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

   provider

2. investigatingMar 17, 2026, 3:25 PM UTC

   We continue experiencing SMS delivery delays from a subset of Twilio Short Codes to AT&T network subscribers in the United States. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.

   provider

3. resolvedMar 17, 2026, 4:06 PM UTC

   We have fully investigated the SMS delivery delays from a subset of Twilio Short Codes to AT&T network subscribers in the United States, and it was determined that the impact was limited to a small set of customers, who have been contacted individually to address any concerns. All systems are operational.

   provider

Corrections

None so far.

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