SMS Delivery Failures to Verizon Network in the U.S. for Small Subset of Phone Numbers via 10DLC

Incident Report for Twilio

Resolved

We are no longer experiencing SMS delivery failures when sending messages to Verizon Network in the United States. This incident has been resolved.

Posted May 02, 2023 - 12:25 PDT

Monitoring

We are observing successful SMS delivery to Verizon network in the United States for a small subset of phone numbers via 10DLC. We will continue to monitor to ensure full service recovery. We expect to provide another update in 2 hours or as soon as more information becomes available.

Posted May 02, 2023 - 10:26 PDT

Update

We continue to experience SMS delivery failures when sending messages to Verizon Network in the United States for a small subset of phone numbers via 10DLC. Our engineers are working with our carrier partner to resolve the issue. We expect to provide another update in 16 hours or as soon as more information becomes available.

Posted May 02, 2023 - 02:35 PDT

Update

We continue to experience SMS delivery failures when sending messages to Verizon Network in the United States for a small subset of phone numbers via 10DLC. Our engineers are working with our carrier partner to resolve the issue. We expect to provide another update in 8 hours or as soon as more information becomes available.

Posted May 01, 2023 - 18:36 PDT

Update

We are still experiencing SMS delivery failures when sending messages to Verizon Network in the United States for a small subset of phone numbers via 10DLC. Our engineers are working with our carrier partner to resolve the issue. We expect to provide another update in 4 hours or as soon as more information becomes available.

Posted May 01, 2023 - 14:36 PDT

Update

We are still experiencing SMS delivery failures when sending messages to Verizon Network in the United States for a small subset of phone numbers via 10DLC. Our engineers are working with our carrier partner to resolve the issue. We expect to provide another update in 2 hours or as soon as more information becomes available.

Posted May 01, 2023 - 12:36 PDT

Investigating

We are observing SMS delivery failures when sending messages to Verizon Network in the United States for a small subset of phone numbers via 10DLC. Our engineering team has been alerted and is actively investigating. We will update in 1 hour or as soon as we have more information.

Posted May 01, 2023 - 11:35 PDT

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