---
title: "Extend a number reservation"
method: POST
path: "/number_reservations/{number_reservation_id}/actions/extend"
tags: ["Phone Number Reservations"]
---

# Extend a number reservation

`POST /number_reservations/{number_reservation_id}/actions/extend`

## Request

- Base URL: `https://api.telnyx.com/v2`
- URL: `https://api.telnyx.com/v2/number_reservations/{number_reservation_id}/actions/extend`
- Auth: HTTP bearer

Extends reservation expiry time on all phone numbers.

## Path parameters

- `number_reservation_id` string, required

## Response `200`

Successful response with details about a number reservation.

- object
  - `data` NumberReservation
    - `id` string, uuid
    - `record_type` string
    - `phone_numbers` ReservedPhoneNumber[]
      - `id` string, uuid
      - `errors` string: Errors the reservation could happen upon
      - `record_type` string
      - `phone_number` string
      - `status` 'pending' | 'success' | 'failure': The status of the phone number's reservation.
      - `created_at` string, date-time: An ISO 8901 datetime string denoting when the individual number reservation was created.
      - `updated_at` string, date-time: An ISO 8901 datetime string for when the the individual number reservation was updated.
      - `expired_at` string, date-time: An ISO 8901 datetime string for when the individual number reservation is going to expire
    - `status` 'pending' | 'success' | 'failure': The status of the entire reservation.
    - `customer_reference` string: A customer reference string for customer look ups.
    - `created_at` string, date-time: An ISO 8901 datetime string denoting when the numbers reservation was created.
    - `errors` string: Errors the reservation could happen upon
    - `updated_at` string, date-time: An ISO 8901 datetime string for when the number reservation was updated.

## Other responses

- `400`: Bad request, the request was unacceptable, often due to missing a required parameter.
- `401`: Unauthorized
- `404`: The requested resource doesn't exist.
- `422`: Unprocessable entity. Check the 'detail' field in response for details.
- `500`: Unexpected error

## Changes

- **2026-10-21** `67df31283a8a`: 5 breaking, 5 info
  - the `errors/items/code` response's property type changed from `integer` to `string`, and format from `int32` to no format for status `400`
  - the `errors/items/code` response's property type changed from `integer` to `string`, and format from `int32` to no format for status `401`
  - the `errors/items/code` response's property type changed from `integer` to `string`, and format from `int32` to no format for status `404`
  - the `errors/items/code` response's property type changed from `integer` to `string`, and format from `int32` to no format for status `422`
  - …6 more
- **2026-10-15** `a72569d69430`: 5 breaking, 5 warning, 10 info
  - the `errors/items/code` response's property type changed from `string` to `integer`, and format from no format to `int32` for status `400`
  - the `errors/items/code` response's property type changed from `string` to `integer`, and format from no format to `int32` for status `401`
  - the `errors/items/code` response's property type changed from `string` to `integer`, and format from no format to `int32` for status `404`
  - the `errors/items/code` response's property type changed from `string` to `integer`, and format from no format to `int32` for status `422`
  - …16 more

[Operation history](https://skmtc.dev/team-telnyx/apis/telnyx-api/changes/number_reservations/:number_reservation_id/actions/extend/post.md)

---

[API](https://skmtc.dev/team-telnyx/apis/telnyx-api.md) - [All operations](https://skmtc.dev/team-telnyx/apis/telnyx-api/llms.txt) - [OpenAPI document](https://skmtc.dev/team-telnyx/apis/telnyx-api/revisions/0f17b8167873?raw)