Twilio: Outbound Call Signing Affected
Timeline of updates
- resolved
Twilio Outbound call signing was degraded for 1 minute between 5:01 and 5:02 and 1 minute between 06:01 and 06:02 Pacific Time on 09/15/2025. During these periods customers may have experienced "32021 -SHAKEN/STIR call verification failed" errors. The issue has now 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).
Cite this
Status incident (vendor impact label: none) posted by Twilio, started 2025-09-15 14:19 UTC, resolved after 0 min, 1 update(s).
- Title
- Outbound Call Signing Affected
- Vendor
- Twilio
- Date
- URL
- https://rewindex.com/company/twilio/incidents/nrth7d73v7z9
Twilio profileRecent Twilio incidentsAll outages on September 15, 2025Twilio in September 2025MarkdownJSON