# Twilio: SMS Delivery Failures to U.S. Carriers via a Subset of Twilio Toll-Free Numbers

> Twilio status incident “SMS Delivery Failures to U.S. Carriers via a Subset of Twilio Toll-Free Numbers” on 2021-09-13: impact minor (vendor’s label), 3.3 h, 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/twilio/incidents/d9x19s30f75c
Last updated: 2021-09-13T20:42:00Z

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2021-09-13 17:27 UTC · Resolved: 2021-09-13 20:42 UTC · Duration: 3.3 h
- Updates: 1
- [Vendor status page: https://status.twilio.com/incidents/d9x19s30f75c](https://status.twilio.com/incidents/d9x19s30f75c)
- [Company: Twilio](https://rewindex.com/company/twilio.md)

## Timeline of updates

- **resolved** 2021-09-13 20:42 UTC: We are no longer experiencing SMS delivery failures when sending from a subset of Twilio toll-free numbers to multiple U.S. carriers. This incident has been resolved.

_From the vendor’s published history: only the final update text is available for incidents before Rewindex began polling this page._

## Cite this

Status incident (vendor impact label: minor) posted by Twilio, started 2021-09-13 17:27 UTC, resolved after 3.3 h, 1 update(s).

- Canonical URL: https://rewindex.com/company/twilio/incidents/d9x19s30f75c
- Citation: Twilio, “SMS Delivery Failures to U.S. Carriers via a Subset of Twilio Toll-Free Numbers” (2021-09-13 17:27 UTC). Archived by Rewindex: https://rewindex.com/company/twilio/incidents/d9x19s30f75c (CC BY 4.0).
- Markdown link: `[Twilio: SMS Delivery Failures to U.S. Carriers via a Subset of Twilio Toll-Free Numbers (2021-09-13)](https://rewindex.com/company/twilio/incidents/d9x19s30f75c)`


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Canonical: https://rewindex.com/company/twilio/incidents/d9x19s30f75c · Markdown: https://rewindex.com/company/twilio/incidents/d9x19s30f75c.md · JSON: https://rewindex.com/api/v1/companies/twilio/incidents/d9x19s30f75c · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-05T15:20:08.596Z