---
title: "Release a test number"
method: DELETE
path: "/numbers/{id}"
tags: ["Numbers"]
---

# Release a test number

`DELETE /numbers/{id}`

## Request

- Base URL: `https://api.hypamoon.com/api/v1`
- URL: `https://api.hypamoon.com/api/v1/numbers/{id}`
- Auth: one of:
  - HTTP bearer
  - OAuth 2 (authorization code, authorization URL `https://app.hypamoon.com/oauth/authorize`, token URL `https://api.hypamoon.com/oauth/token`, scopes: `numbers:write`)

Test mode only. Removes a test number from the test project, so you can take another one (a test project has at most 3). Its call plan is removed with it; calls and messages are kept. A live key gets 409 number_release_not_supported: releasing a live number cancels it at the carrier for good and is not possible through the API.

## Path parameters

- `id` string, uuid, required

## Response `200`

The test number was released.

- ReleasedNumber: A test number that was released.
  - `id` string, uuid, required: The id of the number that was released.
  - `e164` string, required: The number in E.164, like +447700900123.
  - `released` true, required: Always true: the number is no longer in the project.
  - `test` true, required: Always true: only test numbers can be released through the API.

## Other responses

- `401`: Unauthorized: unauthorized, missing_api_key, invalid_api_key, api_key_revoked, project_deleted.
- `403`: Forbidden: project_not_enabled, key_mode_mismatch, missing_scope, verification_required.
- `404`: Not Found: not_found.
- `409`: Conflict: number_release_not_supported.
- `429`: Too Many Requests: rate_limited.
- `500`: Internal Server Error: internal_error.
- `503`: Service Unavailable: service_unavailable.

---

[API](https://skmtc.dev/hypamoon/apis/hypamoon-api.md) · [All operations](https://skmtc.dev/hypamoon/apis/hypamoon-api/llms.txt) · [OpenAPI document](https://skmtc.dev/hypamoon/apis/hypamoon-api/revisions/9f0b90004c06?raw)