Twilio Outage History

A scheduled maintenance window in the Netherlands impacted Twilio's Carrier Network integrations with the Dutch operator partner, T-Mobile NL. Four components were listed as affected during this window: Verify Silent Network Auth, Lookup Identity Match, Lookup SIM Swap, and Legacy Identity MatchAndAttributes. The maintenance began at 7:02 AM UTC and was completed by 9:02 AM UTC, with services restored to normal after the window. The provider issued 2 status updates during the incident.

Twilio ran a scheduled maintenance window for the Vodafone carrier partner in the United Kingdom, impacting two Carrier Network identity components: Lookup Identity Match and Legacy Identity MatchAndAttributes. The maintenance began at Dec 21, 2025 10:32 PM UTC and concluded at Dec 22, 2025 3:17 AM UTC, lasting about 4 hours and 45 minutes. During this period, identity verification functionality relying on the carrier network could have been temporarily unavailable or degraded. The UK-focused maintenance was communicated on the Twilio status page as in progress and then resolved as the window completed.

Twilio conducted a scheduled maintenance window for Vodafone's Qatar SMS carrier, impacting the CARRIER NETWORK / SMS component for the Middle East & Africa. The maintenance began at 10:02 PM UTC and concluded at 10:17 PM UTC, during which SMS delivery via the Vodafone Qatar path was temporarily impacted. The status page showed the maintenance in progress and then returned to normal when the window ended, resulting in a roughly 15-minute interruption before full restoration.

Twilio experienced regional delays and failures in MMS and SMS delivery across APAC and Latin America. The issues affected inbound and outbound messages on a subset of longcodes and shortcodes, causing delivery delays and occasional failures for end users. Affected Twilio components included Carrier Network / MMS (APAC), Carrier Network / SMS (Latin America), and Programmable Messaging / SMS, with regional impact in Australia, Mexico, Peru, and Malaysia. Twilio issued eight official status updates during the incident, with engineers working alongside carrier partners to resolve the problem. The outage lasted roughly 30 hours and 20 minutes, beginning at Dec 20, 2025 9:37 AM UTC and ending at Dec 21, 2025 3:57 PM UTC.

Twilio reported SMS delivery delays affecting the XPhone Network in Israel, impacting text message delivery for users on that network. The issue was listed under Carrier Network / SMS in the Middle East & Africa, with engineers working with the carrier partner to resolve it. The incident began at Dec 19, 2025 11:47 PM UTC and lasted about 3 hours and 15 minutes, with service restored by Dec 20, 2025 3:02 AM UTC.

The provider issued 2 status updates during the outage, detailing the ongoing mitigation work and resolution.

The incident affected SMS delivery and related services across multiple regions. The issue began at Dec 19, 2025 7:22 AM UTC with SMS delivery delays to Telecom of Kosovo J.S.C Network and expanded to additional carriers across APAC, Europe, the Middle East & Africa, and North America, including delays and occasional failures to MTN in Afghanistan and several US networks. In addition to SMS, some MMS delivery and Twilio Interconnect voice paths in US1 were intermittently affected. The impact varied by region and carrier, with many users unable to reliably send or receive messages during the peak of the incident. The outage duration spanned from Dec 19, 2025 7:22 AM UTC to Dec 19, 2025 11:27 PM UTC, roughly 16 hours.

Twilio experienced extended SMS delivery delays affecting several carrier networks, including Botswana, Hungary (Telenor), and the United Kingdom (Vodafone), with related carrier maintenance and identity lookup services also impacted. The incident spanned multiple regions ( Africa, Europe, and parts of APAC) and was addressed through a series of updates from Twilio as engineers worked with carrier partners to restore service. The provider posted 8 status updates over the course of the incident, detailing ongoing investigation, progress with carriers, and eventual restoration of affected components.

The outage lasted from Dec 8, 2025 12:32 PM UTC to at least Dec 12, 2025 12:02 AM UTC and affected a broad set of Twilio services across many regions. The incident began with SMS delivery delays to and from networks in the United States and later expanded to additional regions and carriers, resulting in widespread message delays, failed deliveries on various carriers, and intermittent outbound call quality issues. The impact covered long codes, short codes, and multiple messaging channels across North America, LATAM, Europe, and APAC.

Twilio's status updates showed a sustained response with phases of Investigating, In progress, Monitoring, and Maintenance as engineers worked with carrier partners to resolve the issue. The provider issued numerous updates across components including Carrier Network SMS and Voice, MMS, and Messaging Channels, coordinating with global carriers to restore service. Some disruptions also affected WhatsApp onboarding in Twilio Console, illustrating the breadth of the impact.

By Dec 12, 2025 12:02 AM UTC the incident persisted with ongoing recovery efforts; a broad footprint across regions and services led to a major disruption of communications for customers relying on Twilio for SMS, MMS, and voice capabilities. The incident underscores the complexity of inter-carrier dependencies and the need for coordinated maintenance windows to restore full service.

The outage began on Nov 28, 2025 3:27 PM UTC and affected messaging across a broad set of networks worldwide. Twilio reported SMS delivery delays and failures, followed by MMS delivery report delays, with high latency and 5xx errors impacting a wide range of services. The disruption spanned regions including North America, Europe, APAC, and Latin America, affecting both long codes and short codes across numerous carriers.

Twilio’s engineering teams investigated with carrier partners and issued multiple updates describing ongoing investigation and maintenance as they worked toward restoration. Over the ensuing days, there were continual notices of recovery efforts and gradual improvements across many networks and services, with several paths returning to normal while others continued to stabilize.

As of Dec 1, 2025 7:52 PM UTC, core messaging routes such as Long Codes and Toll-Free numbers in North America were returning to normal and overall latency and failure rates were decreasing, though some regional networks and specific carriers remained in the stabilization phase during the rollout.

Twilio reported a scheduled maintenance window impacting the CARRIER NETWORK / SMS, Europe component due to MegaFon, a Russian mobile carrier. This maintenance affected SMS delivery routed through MegaFon in the Europe region. The outage began at 5:02 AM UTC and was resolved by 6:02 AM UTC, lasting about one hour.