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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 [662 Million Domains] $10,000 Details

Keyword: COEFFICIENCY

Reverse Whois » KEYWORD [coefficiency ]  { 18 domain names }


NumDomain NameRegistrarCreatedUpdatedExpiry
1coefficiency.bizGoDaddy.com, LLC22 Aug 201414 Aug 201621 Aug 2017
2coefficiency.com-7 Feb 199730 Nov 20258 Feb 2026
3coefficiency.orgNameCheap, Inc.4 Oct 201624 Sep 20254 Oct 2026
4coefficiency.netNameCheap, Inc.7 Aug 202528 Aug 20257 Aug 2026
5coefficiency.co.uk-27 Oct 200329 Aug 202027 Oct 2029
6coefficiency.ca-5 Jan 201720 Sep 20255 Jan 2026
7coefficiency.appNameCheap, Inc.7 Aug 2025--
8coefficiency.networkNameCheap, Inc.10 Aug 2025--
9coefficiencyaustralia.comNom Infinitum, Incorporated1 May 20172 May 20171 May 2018
10coefficiencyinc.comNetwork Solutions, LLC2 Apr 201515 Jun 20252 Apr 2025
11coefficiencydesiderate.xyzNameCheap, Inc.4 Sep 201517 Oct 20164 Sep 2016
12coefficiencylab.comNameCheap, Inc.24 Nov 201724 Nov 201724 Nov 2019
13coefficiencylab.co.ukeNom, Inc.24 Nov 201724 Nov 201724 Nov 2019
14coefficiencylab.netOVH sas26 Jun 201926 Jun 201926 Jun 2020
15coefficiencygroup.netWebfusion Ltd.10 Mar 202010 Mar 202010 Mar 2021
16coefficiencygroup.comWebfusion Ltd.10 Mar 202010 Mar 202010 Mar 2021
17coefficiency-network.comNameCheap, Inc.10 Aug 202510 Aug 202510 Aug 2026
18coefficiencynetwork.comNameCheap, Inc.10 Aug 202510 Aug 202510 Aug 2026

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=coefficiency

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