---
title: "Reverse IP (from Domain)"
method: GET
path: "/v1/{domain}/reverse-ip/"
tags: ["Lookups"]
---

# Reverse IP (from Domain)

`GET /v1/{domain}/reverse-ip/`

## Request

- Base URL: `https://api.domaintools.com`
- URL: `https://api.domaintools.com/v1/{domain}/reverse-ip/`
- Auth: one of:
  - API key in header `X-Api-Key`
  - HTTP basic
  - API key in query parameter `signature`
- TypeScript: <https://skmtc.dev/domaintools/apis/domaintools-lookups-and-monitors-api/docs/v1/:domain/reverse-ip/get.ts> (a function with typed inputs; its response is checked against the schema)

List of domains that share the same IP address as the given domain.

## Path parameters

- `domain` string, required: A base (apex) domain like example.com, excluding subdomains.

## Query parameters

- `limit` integer
- `app_partner` string: A short identifier, code, or handle.
- `app_name` string: A short identifier, code, or handle.
- `app_version` string: A short identifier, code, or handle.
- `format` 'html' | 'json' | 'xml': The desired response format.

## Response `200`

OK

- ReverseIp: Response for the Reverse IP (from Domain) endpoint. The `ip_addresses` value is an array when the domain resolves to multiple tracked IP addresses, or a single object when it resolves to one.
  - `response` object
    - `ip_addresses` union
      - ReverseIpAddressEntry[]
        - `ip_address` string
        - `domain_count` integer
        - `domain_names` string[]
      - ReverseIpAddressEntry: A single IP address result in a Reverse IP or Host Domains response.
        - `ip_address` string
        - `domain_count` integer
        - `domain_names` string[]

## Other responses

- `400`: 400: Bad Request. The request was invalid. The response will contain details about the error.
- `401`: 401: Unauthorized. API credentials are required and were not provided, or the provided credentials are not valid.
- `403`: 403: Forbidden. The API credentials provided do not have access to the requested resource or endpoint.
- `404`: 404: Not Found. The requested resource does not exist.
- `500`: 500: Internal Server Error. An unexpected error occurred on the server. If the problem persists, contact DomainTools support.
- `503`: 503: Service Unavailable. The service is temporarily unavailable.

---

[API](https://skmtc.dev/domaintools/apis/domaintools-lookups-and-monitors-api.md) - [All operations](https://skmtc.dev/domaintools/apis/domaintools-lookups-and-monitors-api/llms.txt) - [OpenAPI document](https://skmtc.dev/domaintools/apis/domaintools-lookups-and-monitors-api/revisions/832f423a9729?raw)