SMS Delivery Degradation from Twilio Toll-Free Numbers to US Carriers

Incident Report for Twilio

Resolved

This incident has been resolved.

Posted Nov 29, 2021 - 17:32 PST

Update

We are no longer experiencing SMS delivery delays when sending messages from Twilio Toll Free Numbers i to US Carriers. This incident has been resolved.

Posted Nov 29, 2021 - 17:17 PST

Update

Our monitoring continues to show overall improvement in carrier-side traffic congestion, and we are observing instant SMS delivery from Twilio Toll-Free Numbers at this time. We will continue monitoring the overall US carrier networks to ensure a full recovery. We will provide another update in 2 hours or as soon as more information becomes available.

Posted Nov 29, 2021 - 15:26 PST

Update

Our monitoring shows overall improvement in carrier-side traffic congestion, and we are observing instant SMS delivery from Twilio Toll-Free Numbers at this time. We will continue monitoring the overall US carrier networks to ensure a full recovery. We will provide another update in 2 hours or as soon as more information becomes available.

Posted Nov 29, 2021 - 13:42 PST

Monitoring

Posted Nov 29, 2021 - 11:33 PST

Investigating

Due to sustained high traffic on the US carrier networks, we are currently experiencing SMS delivery delays from Twilio toll-free numbers. Messages are queued due to capacity shortage and customers may see delays when sending to certain US carriers.

Please find the current delivery status for the major carriers below:
AT&T (status - Operational)
T-Mobile (status - Operational)
Sprint (status - Operational)
Verizon (status - Delayed)
MetroPCS (status - Operational)
US Cellular (status - Operational)

We are actively working with our carrier partners to resolve the issue, and we will provide another update in 2 hours or as soon as we have any new information to share.

Posted Nov 29, 2021 - 09:42 PST

This incident affected: CARRIER NETWORK (SMS Toll-Free, North America).