Twilio: SMS Delivery Delays to Small US Carriers in United States of America for a Subset of Toll Free Numbers
Azure outage, Oct 29, 2025 · 23 vendors, 23 incidents
Twilio’s incident started in the same window without naming Azure (timing only, not evidence of a link). (timing only, posted +16 min vs the first vendor naming Azure)
Swipe sideways to see the whole diagram.
Mermaid source
flowchart LR
root["Azure<br/>own incident not archived"]:::inferred
h1["Within an hour<br/>4 vendors, 4 blamed Azure<br/>Devin (Cognition), Smartsheet, Sigma Computing, Elastic Cloud"]:::blames
root --> h1
later["Later<br/>1 vendor, 1 blamed Azure<br/>Speechmatics"]:::blames
root --> later
me["Twilio (this incident)<br/>posted +16 min"]:::me
root -.->|"same window"| meFull event: timeline, evidence and all vendors →
Detected automatically from incidents that started together and named the same provider. A link means one vendor’s incident named another, not a confirmed cause.
Timeline of updates
- resolved
We are no longer experiencing SMS delivery delays when sending messages to Small US Carriers in United States of America for a Subset of Toll Free Numbers. This incident has been resolved.
From Twilio’s published incident history: for incidents before Rewindex began polling this status page, only the final update text is available.
Archive proof
Rewindex commits each version of an incident it captures to a daily checkpoint, chains it to the day before, and has the checkpoint timestamped by FreeTSA and DigiCert.
How the archive is checked, and what it cannot prove.
This incident predates live tracking (October 17, 2026). It came from the vendor’s own published history, which is not covered by checkpoints.
Impact, status and times are the vendor’s own, as last archived. View on status.twilio.com (opens in new tab).