Twilio Outage History

Twilio experienced SMS delivery delays affecting messages sent from network subscribers to a subset of Australia phone numbers, impacting SMS services in the APAC region. The incident lasted 3.1 hours with customers experiencing delayed message delivery during this period. The issue was resolved after the team observed recovery in SMS delivery performance and confirmed normal service restoration.

Twilio's Voice Insights sub-account dashboard in the US1 region experienced issues for 10.8 hours, preventing admin and console users from fetching the last 24 hours of data or applying realm filters. Engineers identified and implemented a mitigation, then monitored the system for stability before confirming full resolution.

Twilio experienced SMS delivery delays and failures when sending messages to Viettel customers in Vietnam, affecting their SMS service in the APAC region. The issue was caused by problems with their carrier partner connection to the Viettel network. The incident lasted 5.4 hours before engineers successfully resolved the delivery issues.

Twilio experienced User Authentication Identity API errors affecting customers in Canada for 4.8 hours. The incident impacted Lookup Identity Match and Lookup SIM Swap services, preventing users from accessing authentication functionality. The service gradually recovered and was fully resolved.

Twilio experienced SMS and MMS delivery delays when sending messages from a subset of their phone numbers to multiple networks in Kazakhstan, Russia, and Belarus. The issue affected SMS services in both APAC and Europe regions. Twilio engineers worked with their carrier partner to resolve the delivery delays, with the incident lasting 4 minutes.

Twilio experienced SMS delivery delays when sending messages to Orange network subscribers in Cameroon, affecting customers using SMS services in the Middle East & Africa region. The incident lasted 2.6 hours, during which messages to Orange Cameroon users were delayed rather than failing completely. The service was restored after the team observed recovery and confirmed normal SMS delivery operations were resumed.

Twilio experienced audio quality issues affecting calls from T-Mobile devices to Twilio phone numbers for 48 minutes. The incident was classified as minor and impacted voice call quality for customers using T-Mobile as their carrier when calling Twilio numbers. The issue was resolved after engineering teams investigated and addressed the problem.

Twilio experienced voice call failures affecting network subscribers attempting to call Twilio phone numbers in multiple Caribbean Islands, including Jamaica, Trinidad and Tobago, the Cayman Islands, and Barbados. The incident lasted 26.6 hours and impacted Twilio's Voice service in the Latin America region. The issue has been resolved and service is functioning normally.

Twilio experienced voice call failures lasting 3.4 hours where network subscribers could not successfully connect to Twilio phone numbers in France, Norway, Italy, Indonesia, and Denmark. The incident affected Twilio's Voice services in both APAC and Europe regions, preventing inbound calls from reaching customers' Twilio numbers in these countries. The service was restored after the team observed recovery and confirmed normal operations were resumed.

Twilio experienced SMS delivery receipt delays from a subset of short codes to multiple US network subscribers for 3.9 hours, though actual message delivery continued to succeed. The issue affected SMS Short Code services in North America, causing delays in delivery confirmations rather than preventing message transmission. The incident was resolved after the team observed recovery and confirmed normal delivery receipt processing was restored.