Incident History

Flex Ui 2.15 Token Refresh Issue Calls Dropping

Our engineers are continuing to work on a fix for the high impact bug with Flex UI 2.15. Flex customers should avoid upgrading to Flex UI 2.15 until resolved. We expect to provide another update in 16 hours, or as soon as more information becomes available.

1765487435 Ongoing

Subset of Inbound Calls With Invalid ST/SH Passports Being Rejected

From 2025-11-25 19:25 UTC until 2025-12-11 00:23 UTC, a small subset of inbound calls from carriers sending invalid STIR/SHAKEN PASSporTs were erroneously rejected. These calls should have been accepted and completed with a 32021 (warning), but due to a software bug they were instead classified as 32020 (error) and blocked. The issue has been mitigated and inbound calls with invalid PASSporTs are now processed normally.

1765486324 - 1765486324 Resolved

SMS Delivery Reports Delays to T-Mobile Network in Poland

We are no longer experiencing message delivery reports to T-Mobile Network in Poland. This incident has been resolved.

1765475928 - 1765487000 Resolved

A Subset of Local UK Numbers Are Unable to Set Emergency Calling Address

Subset of Local UK numbers unable to add emergency calling address has been resolved and Phone Numbers in our Twilio Console are operating normally at this time.

1765474650 - 1765484442 Resolved

Twilio Verify Message Delivery Error Reports Sending to AT&T Network in the USA Using Twilio Short Codes

Twilio Verify was degraded for 45 minutes between 08:00 to 08:45 PT. During this period of time customer might have experience message delivery error reports sending to AT&T network in the USA using Twilio Short codes. The issue has now been resolved

1765472354 - 1765472354 Resolved

SMS Delivery Delays and Failures to Movistar Network in Chile

We are no longer experiencing SMS delivery delays and failures sending to Movistar Network in Chile. This incident has been resolved.

1765470013 - 1765499030 Resolved

SMS Delivery Delays and Failures to Djezzy Network in Algeria

We are no longer experiencing SMS delivery delays when sending messages to Djezzy Network in Algeria. This incident has been resolved.

1765468758 - 1765559761 Resolved

AT&T RCS Messages are Failing With 403 HTML Error

This incident has been mitigated, for further updates relating to this please see incident: "SMS and RCS Delivery Failures on AT&T Network".

1765446355 - 1765448705 Resolved

SMS and RCS Delivery Failures on AT&T Network

This incident has been resolved.

1765442051 - 1765453494 Resolved

[SNOC] SMS Delivery Delays to AT&T Network in the United States via Subset of Long Codes and Short Codes

This incident has been resolved.

1765441280 - 1765459725 Resolved
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