# Twilio: Higher than Normal Level of SMS Filtering of Long Codes When Sending to AT&T

> Twilio status incident “Higher than Normal Level of SMS Filtering of Long Codes When Sending to AT&T” on 2021-06-22: impact minor (vendor’s label), 41 h, 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/twilio/incidents/n18x4t9qvw71
Last updated: 2021-06-24T16:00:00Z

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2021-06-22 22:41 UTC · Resolved: 2021-06-24 16:00 UTC · Duration: 41 h
- Updates: 1
- [Vendor status page: https://status.twilio.com/incidents/n18x4t9qvw71](https://status.twilio.com/incidents/n18x4t9qvw71)
- [Company: Twilio](https://rewindex.com/company/twilio.md)

## Timeline of updates

- **resolved** 2021-06-24 16:00 UTC: Our overnight monitoring shows that the error rate related to the carrier filtering incident to AT&T mobile network has stayed within the normal range and there was no anomaly detected since the implementation of the fix around 16:00 Pacific Time on June 23. The incident is now 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 2021-06-22 22:41 UTC, resolved after 41 h, 1 update(s).

- Canonical URL: https://rewindex.com/company/twilio/incidents/n18x4t9qvw71
- Citation: Twilio, “Higher than Normal Level of SMS Filtering of Long Codes When Sending to AT&T” (2021-06-22 22:41 UTC). Archived by Rewindex: https://rewindex.com/company/twilio/incidents/n18x4t9qvw71 (CC BY 4.0).
- Markdown link: `[Twilio: Higher than Normal Level of SMS Filtering of Long Codes When Sending to AT&T (2021-06-22)](https://rewindex.com/company/twilio/incidents/n18x4t9qvw71)`


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Canonical: https://rewindex.com/company/twilio/incidents/n18x4t9qvw71 · Markdown: https://rewindex.com/company/twilio/incidents/n18x4t9qvw71.md · JSON: https://rewindex.com/api/v1/companies/twilio/incidents/n18x4t9qvw71 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T18:44:12.268Z