Our database now contains whois records of 666 Million (666,469,669) domain names.
Login / Password / Signup
Low Price Guarantee

Whois API / Whois History / Reverse Whois

Our WHOIS API returns consistent and well-structured WHOIS data in XML & JSON format. Returned data contain parsed WHOIS fields that can be easily understood by your application. Along with WHOIS API, we also offer WHOIS History API and Reverse WHOIS API.

Powered by Amazon Web Services With support for 1595 TLDs, our cloud-based API lets you quickly access any domain's WHOIS data through Bulk Whois Lookup, Newly Registered Domains, Dropped Deleted Domains, Expiring Domains and Whois Database Download.
Our Services Price Order
1000 WHOIS Lookup API Queries $2 Details
1000 WHOIS History API Queries $5 Details
1000 Reverse WHOIS API Queries $10 Details
Newly Registered Domains Database $495 Details
Whois Database [666 Million Domains] $10,000 Details

Keyword: 21RESEARCH

Reverse Whois » KEYWORD [21research ]  { 9 domain names }


NumDomain NameRegistrarCreatedUpdatedExpiry
121research.comGoDaddy.com, LLC22 Aug 201121 Mar 202322 Aug 2031
221research.biz1&1 Internet AG9 Mar 2015-8 Mar 2016
321research.net-6 Dec 20227 Dec 20236 Dec 2024
421research.orgeNom, Inc.2 Jul 20128 Jun 20252 Jul 2026
521research.cloudOVH sas14 Dec 202315 Dec 202514 Dec 2026
621research.infoOVH sas17 Jan 202422 Jan 202417 Jan 2025
721research.techOVH sas17 Jan 20241 Apr 202517 Jan 2026
821research.xyzOVH sas17 Jan 20241 Apr 202517 Jan 2026
921research.de--25 Nov 2025-

Reverse Whois Demo

Reverse Whois API

You can fetch the above results using our Reverse Whois API.

https://api.whoxy.com/?key=xxxxx&reverse=whois&keyword=21research

Reverse Whois API lets you perform a comprehensive search on our database, to find domains owned by a company or person.
You just need to enter search terms such as the name, email or company, and you can find all the domains they ever owned.
If your search returns no results, you will NOT be charged any API queries. You are charged only on successful queries.

Sample Output: JSON SchemaXML SchemaJSON Live ResultsXML Live Results

Reverse Whois Pricing Total API Calls Price CPM Purchase
200 Reverse Whois API Queries 200 $2 $10.00 Order Now
1,000 Reverse Whois API Queries 1,000 $10 $10.00 Order Now
10,000 Reverse Whois API Queries 10,000 $100 $10.00 Order Now
50,000 Reverse Whois API Queries 50,000 $400 $8.00 Order Now
250,000 Reverse Whois API Queries 250,000 $1,500 $6.00 Order Now
1 Million Reverse Whois API Queries 1,000,000 $4,000 $4.00 Order Now
5 Million Reverse Whois API Queries 5,000,000 $10,000 $2.00 Order Now