Twilio Outage History

Twilio experienced MMS delivery failures from a subset of long codes to Liberty Media network subscribers in Puerto Rico for 5 hours. The issue affected Twilio customers' ability to send MMS messages to recipients on the Liberty Media network in Puerto Rico. The team identified the root cause and implemented a fix, with service recovery observed and monitored before full resolution was confirmed.

Twilio experienced SMS delivery delays from multiple Croatian network subscribers to Twilio Croatia Long Codes, affecting SMS services in Europe for 4.1 hours. The team identified the root cause and worked to resolve the delivery issues. Service was restored to normal operation and confirmed stable after a monitoring period.

Twilio experienced SIP registration failures affecting iOS Bria Softphone users, who encountered 503/32008 errors while PC and Android devices with identical configurations worked normally. After a 1.9-hour investigation, Twilio determined their services were operating correctly and the issue was specific to the interaction between Bria iOS and the Twilio registrar. The incident was resolved with confirmation that Twilio infrastructure remained fully functional throughout.

Twilio experienced SMS delivery delays to TIGO and COMCEL network subscribers in Guatemala for 6.5 hours. The incident affected Twilio's SMS service in the Latin America region, preventing timely message delivery to users on these specific mobile networks. Service was restored to normal operation after monitoring confirmed recovery stability.

Twilio experienced SMS delivery delays and failures from a subset of short codes to Cellularone NE Arizona network subscribers in the United States. The issue affected SMS Short Code services in North America for approximately 5 minutes. Twilio's team identified the cause and worked to resolve the delivery problems.

Twilio experienced SMS delivery delays from a subset of short codes to multiple network subscribers across the United States for 7 hours. The issue affected SMS Short Code services in North America, causing delayed message delivery for customers using those specific short codes. Twilio identified the root cause and fully resolved the incident, with SMS delivery returning to normal operations.

Twilio customers experienced voice call audio quality degradation and silent audio issues between Twilio phone numbers and network subscribers across multiple networks in the United Kingdom over a 131-hour period. The incident affected Twilio's Voice service in the Europe region, with issues ranging from general audio quality problems to complete silent audio on calls to certain UK numbers. The incident was resolved after multiple cycles of apparent recovery followed by recurring issues, with voice calls eventually returning to normal operation.

Twilio's Flex Insights HR experienced delayed data loads to GoodData workspaces for 2.8 hours, causing users to see outdated or stale data while the portal UI remained functional. The issue was resolved through collaboration with the GoodData vendor team, and users began seeing up-to-date information once data loads returned to normal.

Twilio experienced voice call audio quality degradation affecting calls between Twilio phone numbers and subscribers on multiple networks in the United Kingdom for 10.5 hours. The issue impacted Twilio's Voice service in the Europe region, causing poor audio quality during calls. Twilio identified the root cause and resolved the incident, with voice calls returning to normal operation.

Twilio experienced SMS delivery delays to Tigo network subscribers in Honduras for 21.4 hours. The issue affected Twilio customers sending SMS messages to recipients on the Tigo network in Honduras, causing delayed message delivery. The incident was resolved and SMS delivery returned to normal operation.