Twilio Outage History

Twilio customers experienced silent and one-way audio issues when making voice calls from a subset of UK phone numbers to UK network subscribers. The incident affected Twilio's Voice service in the Europe region for 32 minutes. The issue was resolved and voice calls from the affected UK phone numbers returned to normal operation.

Twilio experienced SMS delivery delays and failures when sending messages to NumberBarn network subscribers in the United States, affecting all SMS services including long code, toll-free, and short code messaging across North America. The incident lasted 57.2 hours, during which Twilio customers were unable to reliably deliver SMS messages to recipients on the NumberBarn network. The issue was resolved after Twilio identified the root cause and implemented a fix, with service returning to normal operations.

Twilio's monitoring systems detected a potential issue with inbound messaging delays on their Conversations service, prompting an automatic alert and engineering investigation. After a 21-minute investigation, engineers determined there was no noticeable customer impact from the detected anomaly. All systems were confirmed to be operational and the incident was resolved.

Twilio experienced SMS delivery delays and failures from a subset of Long Codes to WOM network subscribers in Colombia for 4.6 hours. The issue affected SMS services in Latin America, preventing reliable message delivery to users on the WOM network. The incident was resolved after the team identified the root cause and implemented a fix, with service returning to normal operation.

Twilio experienced SMS delivery delays and failures affecting messages sent from Belgium network subscribers to a subset of Twilio Long Codes in Europe. The incident lasted 1.7 hours and impacted SMS services for customers receiving messages from Belgian senders. Twilio's team identified the root cause and resolved the issue, with service recovery observed and monitoring continuing to ensure stability.

Twilio experienced voice call failures affecting calls from network subscribers to a subset of Singapore phone numbers, impacting Voice services in the APAC region for 5.4 hours. The issue affected multiple carrier networks attempting to reach Twilio customers' Singapore numbers. Twilio's team identified the root cause and resolved the connectivity problems.

Twilio's Flex AI Copilot experienced errors when creating channel notes, affecting the Flex Agent Desktop functionality for approximately 7 days. Engineers identified the root cause and deployed a fix, with the service returning to normal operation after an extended monitoring period to ensure system stability.

Twilio experienced SMS delivery receipt delays from a subset of short codes to multiple US network subscribers for 22.7 hours. While SMS messages continued to be delivered successfully, customers experienced delays in receiving delivery confirmations. The issue was identified, monitored through multiple recovery phases, and fully resolved with normal delivery receipt operations restored.

Twilio experienced SMS delivery delays to Smartfren Telecom network subscribers in Indonesia for approximately 50 hours. The issue affected Twilio customers sending SMS messages to users on the Smartfren network in the APAC region. The team identified the root cause and worked on a resolution, with service returning to normal operations after monitoring confirmed delivery recovery.

Twilio experienced SMS delivery failures from their phone numbers to MEGACOM network subscribers in Kyrgyzstan, affecting customers' ability to send text messages to recipients on that specific network. The incident lasted 90 hours, during which Twilio identified the root cause and worked on a resolution. SMS delivery to MEGACOM Kyrgyzstan was restored and returned to normal operation.