# Clerk: SMS Delivery Issues

> Clerk status incident “SMS Delivery Issues” on 2026-10-29: impact major (vendor’s label), 36 min, 6 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/clerk/incidents/01M64BZ539EBV61Y908QHE84C4
Last updated: 2026-10-30T00:40:10Z

- Impact (vendor’s label): major
- Status: resolved · edited after publishing
- Started: 2026-10-29 17:40 UTC · Resolved: 2026-10-29 18:16 UTC · Duration: 36 min
- Updates: 6 · Affected components: Authentication & User
- [Vendor status page: https://status.clerk.com/incidents/01M64BZ539EBV61Y908QHE84C4](https://status.clerk.com/incidents/01M64BZ539EBV61Y908QHE84C4)
- [Company: Clerk](https://rewindex.com/company/clerk.md)

## Timeline of updates

- **investigating** 2026-10-29 17:40 UTC: We’re investigating SMS delivery issues affecting some users. Verification codes may be delayed or fail to arrive.
- **investigating** 2026-10-29 17:46 UTC: We’re investigating SMS delivery issues with an upstream SMS provider.
- **investigating** 2026-10-29 17:54 UTC: We're continuing to investigate SMS delivery issues with an upstream vendor impacting users on AT&T.
- **investigating** 2026-10-29 18:00 UTC: We’ve identified an issue with an upstream SMS provider’s delivery route to AT&T numbers. The provider is switching traffic to an alternate route. We’re monitoring delivery rates and will share updates as we learn more.
- **monitoring** 2026-10-29 18:05 UTC: SMS verification completion rates have returned to normal levels following the provider’s switch to an alternate delivery route. We’re continuing to monitor delivery and verification rates.
- **resolved** 2026-10-29 18:16 UTC: The SMS delivery issue is resolved. Delivery and verification completion rates have returned to normal following our upstream provider’s switch to an alternate route.

## Rewindex changes for this incident

- 2026-10-29 17:40 UTC: [Major incident: SMS Delivery Issues](https://rewindex.com/change/ie99dd01f0da2d6.md)
- 2026-10-29 18:03 UTC: [Incident updated: SMS Delivery Issues](https://rewindex.com/change/r113b487d2e42a3.md)
- 2026-10-29 18:13 UTC: [Incident updated: SMS Delivery Issues](https://rewindex.com/change/r5e65068cb4cd86.md)
- 2026-10-29 18:23 UTC: [Incident updated: SMS Delivery Issues](https://rewindex.com/change/r6293d58d50149d.md)


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Canonical: https://rewindex.com/company/clerk/incidents/01M64BZ539EBV61Y908QHE84C4 · Markdown: https://rewindex.com/company/clerk/incidents/01M64BZ539EBV61Y908QHE84C4.md · JSON: https://rewindex.com/api/v1/companies/clerk/incidents/01M64BZ539EBV61Y908QHE84C4 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-30T00:40:10.921Z