SMS Delivery Delays from a Subset of Twilio Long Codes to AT&T United States

Summary

SMS Delivery Delays from a Subset of Twilio Long Codes to AT&T United States

The incident has been resolved and SMS delivery from a subset of Twilio Long Codes to AT&T network subscribers in the United States is operating normally.

• Started

  Oct 5, 2026 · 4:25 PM

• Resolved

  Oct 5, 2026 · 9:34 PM

• Duration

  5h 8m

• Severity

  Minor

• ◐

  Investigating

  Oct 5 · 4:25 PM SendGrid

  Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Long 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.

• ◐

  Investigating

  Oct 5 · 5:25 PM SendGrid

  Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Long Codes to AT&T network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.

• ◉

  Monitoring

  Oct 5 · 7:27 PM SendGrid

  We have observed a recovery in SMS delivery from a subset of Twilio Long Codes to AT&T network subscribers in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.

• ✓

  Resolved

  Oct 5 · 9:34 PM SendGrid

  The incident has been resolved and SMS delivery from a subset of Twilio Long Codes to AT&T network subscribers in the United States is operating normally.