Twilio Outage History

Twilio experienced SMS delivery delays when sending messages to MobiFone network subscribers in Vietnam, affecting SMS services in the APAC region for 6.6 hours. Engineers worked with carrier partners to identify and resolve the underlying issue. Service recovery was observed and monitored before full resolution was confirmed, with SMS delivery to MobiFone Vietnam returning to normal operations.

Twilio experienced SMS delivery delays and failures when sending messages to Ncell network subscribers in Nepal, affecting customers in the APAC region for 5.3 hours. The service disruption impacted SMS delivery to this specific carrier network, preventing reliable message transmission to Ncell users. The issue was resolved after the team observed recovery in delivery performance and confirmed full restoration of SMS services to the affected network.

Twilio experienced SMS delivery delays and failures to MTS network subscribers in Kazakhstan for 5.7 hours. The issue affected Twilio's SMS service in the Middle East & Africa region, preventing messages from reaching users on the MTS Kazakhstan network. Engineers worked with carrier partners to resolve the connectivity issue, and normal SMS delivery was restored after monitoring confirmed service stability.

Twilio experienced SMS delivery delays and failures from a subset of phone numbers to multiple networks in India for 2.9 hours. The issue affected SMS services in the APAC region, preventing messages from being delivered reliably to Indian network subscribers. Engineers worked with carrier partners to resolve the problem, and service was fully restored after monitoring confirmed stable delivery performance.

Twilio experienced an issue with account deletions that involved shared A2P 10DLC brands between multiple accounts. The incident affected a small set of customers who were attempting to delete accounts with shared messaging brands. The issue was resolved after 54 minutes, with affected customers contacted individually to address any concerns.

Twilio experienced a 12-minute incident where TaskRouter and Flex customers encountered delays in routing calls and messages to agents, with incomplete insights data in TaskRouter and Flex Insights. Engineers identified the issue affecting TaskRouter, Flex Insights, and Flex Routing components and deployed a fix. The issue was fully investigated and resolved within the brief duration.

Twilio's Connect App experienced elevated error rates for 3.3 hours due to increased traffic, causing customers to encounter potential errors when using the application. The engineering team identified a drop in success rates and actively worked to mitigate the traffic-related impact. The issue was resolved and the service returned to normal operation with continued monitoring for system stability.

Twilio experienced a 4.6-hour outage where users were unable to create new SMS campaigns through the console, receiving "There was an error while processing your request" messages with undefined error details. The issue affected both main accounts and subaccounts attempting to register campaigns via the Twilio console interface. Engineers implemented a fix and confirmed the service returned to normal operation after monitoring system performance.

Twilio experienced SMS delivery failures to A1 network subscribers in Slovenia for 5.3 hours, affecting customers' ability to send text messages to that specific carrier network. The team identified the root cause and worked on a resolution. Service was restored with successful SMS deliveries being observed by the end of the incident.

Twilio experienced User Authentication Identity SNA missing redirects and Gateway API failures specifically affecting T-Mobile users in the United States for 4.8 hours. The issue impacted Twilio's Verify Silent Network Auth service, preventing proper authentication redirects for customers using T-Mobile as their carrier. Engineers identified the root cause and implemented a fix, with service recovery confirmed after monitoring for stability.