# Twilio: SMS Delivery Failures to AT&T over a Subset of Long Code

> Twilio status incident “SMS Delivery Failures to AT&T over a Subset of Long Code” on 2021-06-09: impact none (vendor’s label), 0 min, 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/twilio/incidents/z3rnpzc4jpsl
Last updated: 2021-06-09T21:05:00Z

- Impact (vendor’s label): none
- Status: resolved
- Started: 2021-06-09 21:05 UTC · Resolved: 2021-06-09 21:05 UTC · Duration: 0 min
- Updates: 1
- [Vendor status page: https://status.twilio.com/incidents/z3rnpzc4jpsl](https://status.twilio.com/incidents/z3rnpzc4jpsl)
- [Company: Twilio](https://rewindex.com/company/twilio.md)

## Timeline of updates

- **resolved** 2021-06-09 21:05 UTC: Between 10:40am and 12:57pm Pacific Time on 06/09/2021, Twilio observed elevated SMS delivery failures from a subset of Twilio long codes to US AT&T network. Our engineering team worked with our carrier partner to resolve the issue.

_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: none) posted by Twilio, started 2021-06-09 21:05 UTC, resolved after 0 min, 1 update(s).

- Canonical URL: https://rewindex.com/company/twilio/incidents/z3rnpzc4jpsl
- Citation: Twilio, “SMS Delivery Failures to AT&T over a Subset of Long Code” (2021-06-09 21:05 UTC). Archived by Rewindex: https://rewindex.com/company/twilio/incidents/z3rnpzc4jpsl (CC BY 4.0).
- Markdown link: `[Twilio: SMS Delivery Failures to AT&T over a Subset of Long Code (2021-06-09)](https://rewindex.com/company/twilio/incidents/z3rnpzc4jpsl)`


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Canonical: https://rewindex.com/company/twilio/incidents/z3rnpzc4jpsl · Markdown: https://rewindex.com/company/twilio/incidents/z3rnpzc4jpsl.md · JSON: https://rewindex.com/api/v1/companies/twilio/incidents/z3rnpzc4jpsl · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T13:43:36.244Z