# Twilio: AccSec Verizon US API Error - Unsupported Subscriber

> Twilio status incident “AccSec Verizon US API Error - Unsupported Subscriber” on 2023-12-01: impact minor (vendor’s label), 3 d, 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/twilio/incidents/nqqk3t1tfvrn
Last updated: 2023-12-04T17:29:00Z

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2023-12-01 06:59 UTC · Resolved: 2023-12-04 17:29 UTC · Duration: 3 d
- Updates: 1
- [Vendor status page: https://status.twilio.com/incidents/nqqk3t1tfvrn](https://status.twilio.com/incidents/nqqk3t1tfvrn)
- [Company: Twilio](https://rewindex.com/company/twilio.md)

## Timeline of updates

- **resolved** 2023-12-04 17:29 UTC: The incident affecting Verify API Silent Network Auth method which caused users to receive an "Unsupported Subscriber" error response has now been resolved. It was determined that the incident was related to incompatible handsets and was not caused by degraded carrier performance. The service is operational at this time.

_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 2023-12-01 06:59 UTC, resolved after 3 d, 1 update(s).

- Canonical URL: https://rewindex.com/company/twilio/incidents/nqqk3t1tfvrn
- Citation: Twilio, “AccSec Verizon US API Error - Unsupported Subscriber” (2023-12-01 06:59 UTC). Archived by Rewindex: https://rewindex.com/company/twilio/incidents/nqqk3t1tfvrn (CC BY 4.0).
- Markdown link: `[Twilio: AccSec Verizon US API Error - Unsupported Subscriber (2023-12-01)](https://rewindex.com/company/twilio/incidents/nqqk3t1tfvrn)`


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Canonical: https://rewindex.com/company/twilio/incidents/nqqk3t1tfvrn · Markdown: https://rewindex.com/company/twilio/incidents/nqqk3t1tfvrn.md · JSON: https://rewindex.com/api/v1/companies/twilio/incidents/nqqk3t1tfvrn · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T13:45:36.322Z