Twilio Outage History

Twilio experienced increased failures in User Authentication Identity Silent Network Auth (SNA) specifically for Telkomsel customers in Indonesia, affecting the Verify Silent Network Auth component. The incident lasted 5.7 hours, during which customers using Twilio's authentication services with Telkomsel likely experienced higher failure rates for silent network authentication attempts. The issue was identified, resolved, and service returned to normal operation.

Twilio's User Authentication Identity Gateway API experienced high latency specifically for T-Mobile customers in the United States, affecting the Lookup SIM Swap component. The latency issues impacted authentication services for T-Mobile users for approximately 3.1 hours before being fully resolved.

Twilio's Lookup V2 API experienced intermittent errors with the reassigned number package, causing degraded responses for approximately 29 minutes. The issue affected the Lookup service component and was resolved after the team identified recovery and continued monitoring. Normal service functionality was restored.

Twilio experienced an issue with WhatsApp sender registration through Meta's embedded signup process, preventing customers from completing the registration workflow. The incident affected Twilio's Messaging Channels service for approximately 4 hours. The service was successfully restored and the incident was resolved after monitoring confirmed full recovery.

Twilio experienced SMS delivery delays and failures to Viva Cell MTS network subscribers in Armenia for 6.9 hours. The incident affected Twilio's SMS service in the Europe region, preventing customers from successfully delivering messages to recipients on that specific carrier network. The issue was identified and resolved, with SMS delivery returning to normal operations after a monitored recovery period.

Twilio experienced SMS delivery delays to AT&T network subscribers in Mexico for 6.1 hours. The issue affected Twilio customers sending SMS messages to AT&T Mexico users, causing delayed message delivery. Twilio's team identified the root cause and worked to resolve the issue, with service recovery observed and monitored for stability.

Twilio experienced SMS delivery delays to Orange network subscribers in Cameroon for 12.5 hours, affecting customers sending messages to that specific carrier. The team identified the root cause and worked on resolution throughout the incident. Service recovery was observed and monitored for stability before the incident was fully resolved.

Twilio's REST API experienced unexpected 503 errors affecting less than 0.01% of requests over a 3.1-hour period. The errors occurred in brief windows at 19:30 UTC and again from 20:00-20:02 UTC. Engineers investigated and resolved the issue, with APIs returning to normal operation.

Twilio experienced SMS delivery failures from a subset of long codes to Orange network subscribers in Côte d'Ivoire for 18.2 hours. The issue affected Twilio's SMS service in the Middle East & Africa region, preventing customers from successfully delivering messages to Orange mobile users in that country. The incident was resolved after the team identified the root cause and implemented a fix, with service returning to normal operation.

Twilio experienced User Authentication Identity API failures specifically affecting T-Mobile customers in the United States for 5.7 hours. The incident impacted Verify Silent Network Auth and Lookup SIM Swap services, preventing proper authentication for T-Mobile users. Twilio identified the root cause and implemented a fix, with service returning to normal operation after a monitoring period.