# Segment: Mandatory 10DLC Registration is leading to many customers SMS messages not sending

> Segment status incident “Mandatory 10DLC Registration is leading to many customers SMS messages not sending” on 2023-08-31: impact none (vendor’s label), 0 min, 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/segment/incidents/vll80d7psmdg
Last updated: 2023-08-31T07:00:00Z

- Impact (vendor’s label): none
- Status: resolved
- Started: 2023-08-31 07:00 UTC · Resolved: 2023-08-31 07:00 UTC · Duration: 0 min
- Updates: 1
- [Vendor status page: https://status.segment.com/incidents/vll80d7psmdg](https://status.segment.com/incidents/vll80d7psmdg)
- [Company: Segment](https://rewindex.com/company/segment.md)

## Timeline of updates

- **resolved** 2023-08-31 07:00 UTC: As communicated via email, the deadline for 10DLC registration was 8/31, after which, unregistered A2P 10DLC numbers have been blocked. If you are seeing unsent messages, especially with error code 30034, this may be the cause. You can check the 10DLC status for your SMS numbers in your Twilio console here: https://console.twilio.com/us1/develop/phone-numbers/manage/incoming/a2p-compliance/status You can also read more about how to register your numbers with 10DLC here: https://pages.twilio.com/10DLC-HelpArticles-WW.html?utm\_source=CustomerComms&utm\_medium=email&utm\_campaign=SS10DLC

_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 Segment, started 2023-08-31 07:00 UTC, resolved after 0 min, 1 update(s).

- Canonical URL: https://rewindex.com/company/segment/incidents/vll80d7psmdg
- Citation: Segment, “Mandatory 10DLC Registration is leading to many customers SMS messages not sending” (2023-08-31 07:00 UTC). Archived by Rewindex: https://rewindex.com/company/segment/incidents/vll80d7psmdg (CC BY 4.0).
- Markdown link: `[Segment: Mandatory 10DLC Registration is leading to many customers SMS messages not sending (2023-08-31)](https://rewindex.com/company/segment/incidents/vll80d7psmdg)`


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Canonical: https://rewindex.com/company/segment/incidents/vll80d7psmdg · Markdown: https://rewindex.com/company/segment/incidents/vll80d7psmdg.md · JSON: https://rewindex.com/api/v1/companies/segment/incidents/vll80d7psmdg · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-05T15:57:31.348Z