Twilio Outage History

The Twilio platform experienced a broad disruption affecting SMS delivery and inbound/outbound voice services across multiple regions, including APAC, Europe, Latin America, and the Americas. Users reported inbound call failures, message delivery delays, and inbound/outbound message issues across various carriers. The incident began during a Mexico carrier partner maintenance window on Jul 31, 2025 6:02 AM UTC, and the status page documented ongoing investigation, network impact, and carrier partner remediation efforts as the situation evolved. By Aug 1, 2025 4:37 PM UTC, recovery was underway in several regions with Europe Voice returning to normal and continued monitoring for full restoration. The incident spanned more than a day, driven by a sequence of carrier and interconnect issues and multiple official updates.

Twilio experienced 5xx errors in the Organization service starting at Jul 31, 2025 3:57 AM UTC, causing degraded organization management capabilities for users. At the same time, SMS delivery failures affected Argentina across a subset of short codes, and SMS delays were observed to the Drillisch 1&1 network in Germany. The incident lasted approximately 1 hour and 15 minutes and was resolved by Jul 31, 2025 5:12 AM UTC. The provider issued four status updates during the outage, including notes that recovery was observed for the German SMS path by Jul 31, 2025 4:42 AM UTC and that affected services returned to normal in stages.

The Twilio carrier networks experienced SMS delivery delays and call issues during a scheduled maintenance window, affecting Europe and Latin America. In Germany, SMS deliveries to Drillisch 1&1 were delayed, and in Argentina messaging via a subset of shortcodes encountered delays. Call failures were observed for some Germany numbers and later for Norway subscribers, indicating a broader regional impact on SMS and voice services. The incident lasted roughly 7 hours and 20 minutes and progressed through multiple status updates as engineers worked with carrier partners.

Twilio experienced a broad outage hitting SMS delivery and voice services across Europe, Latin America, APAC, and North America. Customers faced delays delivering SMS messages, call failures, and degraded real-time communication features. The outage began on Jul 28, 2025 4:37 PM UTC and lasted for about 1 day, 23 hours, and 45 minutes, with recovery occurring at different times by region. The disruption affected multiple Twilio products including SMS, Voice, Speech Recognition, RealTime Transcription, ConversationRelay, and related APIs.

Twilio's status page documented ongoing investigation and mitigation work across a range of components. Early updates noted delays in SMS deliveries to carriers and degradation of RealTime Transcription and Voice Gather, followed by reports of pricing data delays and broader voice/API issues. The provider issued numerous updates throughout the incident as engineers and carrier partners worked to restore services; recovery varied by region and service, with some components coming back online while others remained degraded for a period.

The incident appeared global in scope, with regional patterns in Europe, North America, Latin America, and APAC. User reports during the event were limited in volume, but official communications reflect a broad impact across carrier networks and Twilio products. By Jul 30, 2025 4:22 PM UTC, many services had returned to normal in several regions, while others were still in the process of recovery.

Twilio experienced SMS delivery delays to the Cellcard network in Cambodia, affecting message delivery for users in that region. In North America, scheduled maintenance on T-Mobile impacted SMS and MMS long codes and short codes, resulting in degraded messaging for some users. An additional set of API errors under AccSec contributed to intermittent verification and network issues during the incident. The combination led to regional messaging degradation with users seeing delays and occasional failures.

The issue began on Jul 27, 2025 2:42 PM UTC and was resolved by Jul 28, 2025 3:27 PM UTC. Eight official status updates were published during the incident, covering APAC delays, maintenance windows, and recovery progress. The disruption affected multiple components across the APAC SMS path and several North America carrier paths (SMS and MMS long codes and short codes), indicating a regional pattern rather than a single service area. The outage lasted roughly 26 hours before full restoration.

Twilio experienced a partial outage affecting outbound SMS to the U Mobile network in Malaysia. The APAC carrier network component showed degraded performance, causing SMS delivery failures for users trying to reach U Mobile numbers. The incident began around Jul 27, 2025 7:13 AM UTC and lasted until Jul 27, 2025 11:47 AM UTC, for a total duration of roughly 4 hours and 34 minutes. The issue impacted messages routed through Twilio's carrier partner in the APAC region. The outage spanned multiple updates as the engineering teams worked with the carrier partner to resolve the problem.

The Twilio status page reported SMS delivery delays affecting messages sent to the Vodacom network in Tanzania. The outage began at Jul 26, 2025 3:07 AM UTC and was resolved by Jul 26, 2025 7:02 AM UTC, lasting approximately 3 hours and 55 minutes. The issue impacted SMS delivery through the CARRIER NETWORK / SMS component in this region as engineers worked with the carrier partner to restore normal delivery.

Two official status updates were posted during the incident: an initial notice of investigation and carrier coordination, followed by a resolution update confirming service was back to normal. The disruption primarily affected messages routed to Vodacom Tanzania; other regions or services were not noted as impacted.

The Twilio status page reported an APAC carrier issue causing SMS delivery delays to the U Mobile network in Malaysia. Messages may have been delayed or queued while attempting delivery to U Mobile in Malaysia, with the incident affecting the CARRIER NETWORK / SMS, APAC component. The outage lasted approximately 2 hours and 15 minutes, beginning at Jul 25, 2025 10:57 PM UTC and concluding at Jul 26, 2025 1:12 AM UTC.

The provider issued 2 status updates during the incident. The updates noted ongoing delays and that engineers were working with the carrier partner to resolve the problem, with the issue resolving and service returning to normal by Jul 26, 2025 1:12 AM UTC. The geographic scope was APAC, specifically Malaysia.

The incident began on Jul 8, 2025 5:22 PM UTC with delays in delivering messages to Digi Mobil in Italy and expanded to many carrier networks across Europe, APAC, the Middle East & Africa, and the Americas. The disruption affected SMS and MMS traffic across long codes, short codes, and toll-free numbers, with ongoing delivery delays and occasional delivery report delays reported. User reports from regions including the United Kingdom and United States aligned with the broader status updates and ongoing messaging issues.

Twilio experienced widespread SMS delivery delays affecting messages routed through carrier networks across North America, Europe, APAC, Africa, and Latin America. Examples included delays to United States Cellular in the United States, Phoenix/Voentele Network in the Russian Federation, NetOne in Zimbabwe, and Claro in the Dominican Republic, among others. Users experienced slower or failed delivery of SMS messages rather than a complete outage as Twilio and carrier partners investigated and coordinated across networks.

The incident began at Jul 6, 2025 4:02 PM UTC and was resolved by Jul 8, 2025 3:47 PM UTC as carrier routes stabilized. Twilio and partner networks posted multiple updates throughout the incident, including notices of maintenance and ongoing recovery efforts. The event was characterized by degraded delivery across a broad, multi-region footprint rather than a single regional fault.