---
title: "Unassign Number from Trunk"
method: DELETE
path: "/api/v1/Account/{auth_id}/numbers/{phone_number}/assign"
tags: ["Phone Numbers"]
---

# Unassign Number from Trunk

`DELETE /api/v1/Account/{auth_id}/numbers/{phone_number}/assign`

## Request

- Base URL: `https://api.vobiz.ai`
- URL: `https://api.vobiz.ai/api/v1/Account/{auth_id}/numbers/{phone_number}/assign`
- Auth: API key in header `X-Auth-ID` and API key in header `X-Auth-Token`
- TypeScript: <https://skmtc.dev/vobiz/apis/vobiz-api/docs/api/v1/Account/:auth_id/numbers/:phone_number/assign/delete.ts> (a function with typed inputs; its response is checked against the schema)

Remove the assignment between a phone number and a SIP trunk. After
unassignment, the number remains in your account inventory but will
no longer route inbound calls through the previously assigned trunk.
URL-encode the phone number (use `%2B` instead of `+`).

## Path parameters

- `auth_id` string, required
- `phone_number` string, required

## Response `204`

Number unassigned

## Other responses

- `400`: Invalid request
- `404`: Number not found

---

[API](https://skmtc.dev/vobiz/apis/vobiz-api.md) - [All operations](https://skmtc.dev/vobiz/apis/vobiz-api/llms.txt) - [OpenAPI document](https://skmtc.dev/vobiz/apis/vobiz-api/revisions/863f08cd6737?raw)