Delayed SMS Delivery Receipts to the Cingular Wireless (AT&T) and Verizon Wireless Network in US over a Subset of Shortcodes

Incident Report for Twilio

Resolved

We are no longer experiencing delayed SMS delivery receipts when sending messages to the Cingular Wireless (AT&T) and Verizon Wireless Network in US over a subset of shortcodes. This incident has been resolved.

Posted Jun 08, 2022 - 07:48 PDT

Monitoring

We are observing recovery in delayed SMS delivery receipts when sending messages to the Cingular Wireless (AT&T) and Verizon Wireless Network in US over a subset of shortcodes. We will continue monitoring the service to ensure a full recovery. We will provide another update in 2 hours or as soon as more information becomes available.

Posted Jun 08, 2022 - 06:43 PDT

Update

We are experiencing delayed SMS delivery receipts when sending messages to the Cingular Wireless (AT&T) and Verizon Wireless Network in US over a subset of shortcodes. 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.

Posted Jun 08, 2022 - 06:12 PDT

Investigating

Our monitoring systems have detected a potential issue with SMS delivery receipts to the Cingular Wireless (AT&T) and Verizon Wireless network in US over a subset of shortcodes. Our engineering team has been alerted and is actively investigating. We will update as soon as we have more information.

Posted Jun 08, 2022 - 06:07 PDT

This incident affected: CARRIER NETWORK (SMS Short Code, North America).