Twilio incident

SMS Delivery Delays and Failures from a Subset of Twilio Short Codes and Toll-Free Numbers to Altice (CSC Wireless) United States

Minor Resolved View vendor source →

Twilio experienced a minor incident on August 28, 2026 affecting SMS Short Code, North America and SMS Toll-Free, North America and 1 more component, lasting 6h 1m. The incident has been resolved; the full update timeline is below.

Started
Aug 28, 2026, 04:42 PM UTC
Resolved
Aug 28, 2026, 10:43 PM UTC
Duration
6h 1m
Detected by Pingoru
Aug 28, 2026, 04:42 PM UTC

Affected components

SMS Short Code, North AmericaSMS Toll-Free, North AmericaSMS Toll-Free, North America

Update timeline

  1. investigating Aug 28, 2026, 04:42 PM UTC

    Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Short Codes and Toll-Free Numbers to Altice (CSC Wireless) 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.

  2. identified Aug 28, 2026, 04:52 PM UTC

    Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Short Codes and Toll-Free Numbers to Altice network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.

  3. identified Aug 28, 2026, 05:52 PM UTC

    Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Short Codes and Toll-Free Numbers to Altice (CSC Wireless) network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.

  4. monitoring Aug 28, 2026, 07:54 PM UTC

    We have observed a recovery in SMS delivery from a subset of Twilio Short Codes and Toll-Free Numbers to Altice (CSC Wireless) 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.

  5. monitoring Aug 28, 2026, 09:54 PM UTC

    We have observed a recovery in SMS delivery from a subset of Twilio Short Codes and Toll-Free Numbers to Altice (CSC Wireless) network subscribers in the United States and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.

  6. resolved Aug 28, 2026, 10:43 PM UTC

    The incident has been resolved and SMS delivery from a subset of Twilio Short Codes and Toll-Free Numbers to Altice (CSC Wireless) network subscribers in the United States is operating normally.