API Documentation

Reverse Whois


The DomainTools API is organized into distinct products with queries that follow a
RESTful URL structure wherever possible. Each product offers free, un-authenticated
access for the sample URLs listed with each product. If you haven’t already, you may
want to review the getting started document to learn
about authentication and response formats.

The Reverse Whois API provides a list of domain names that share the same Registrant Information. You can enter terms that describe a domain owner, like an email address or a company name, and you’ll get a list of domain names that have your search terms listed in the Whois record.


Reverse Whois Parameters

Parameters Description
terms Required.
List of one or more terms to search for in the Whois record, separated with the pipe character ( | ).
exclude Domain names with Whois records that match these terms will be excluded from the result set. Separate multiple
terms with the pipe character ( | ).
scope Sets the scope of the report to include only current Whois records, or to
include both current and historic records. Value must be current (the default) or historic.
mode quote : only lists the size and retail price of the query if you have per-domain pricing access
purchase : includes the complete list of domain names that match the query

Sample Response:

  response: {
    domain_count: {
      current: 310, 
      historic: 412
    domains: ['bulk-check.com',
    report_price: {
      current: 299, 
      historic: 299

You must provide your
API credentials
to use this API.

Not sure what Reverse Whois does? Visit ReverseWhois.com.

Sample Queries


General Information