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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 1576 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 [585 Million Domains] $10,000 Details

Keyword: CASTLEBIO

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


NumDomain NameRegistrarCreatedUpdatedExpiry
1castlebio.comGoDaddy.com, LLC10 Oct 201611 Oct 202410 Oct 2025
2castlebio.infoGoDaddy.com, LLC30 Mar 202314 May 202430 Mar 2025
3castlebio.netGoDaddy.com, LLC30 Mar 202330 Mar 202330 Mar 2028
4castlebio.storeTucows Domains Inc.1 Oct 20241 Oct 20241 Oct 2025
5castlebiosciencesportal.comGoDaddy.com, LLC8 Oct 201411 Sep 202310 Sep 2026
6castlebiosciencestests.comLaunchpad, Inc.29 Aug 201314 Aug 202429 Aug 2025
7castlebiosciences.comGoDaddy.com, LLC10 Sep 200711 Sep 202410 Sep 2026
8castlebiosciences.infoGoDaddy.com, LLC10 Sep 200716 Sep 202410 Sep 2026
9castlebiosciences.netGoDaddy.com, LLC10 Sep 200711 Sep 202410 Sep 2026
10castlebiosciences.orgGoDaddy.com, LLC10 Sep 200716 Sep 202410 Sep 2026
11castlebiotech.comGoDaddy.com, LLC24 Feb 201725 Feb 202324 Feb 2025
12castlebiopharma.comGoogle, Inc.19 Apr 20207 May 202419 Apr 2025
13castlebiocsiences.comGoogle, Inc.3 Sep 20203 Sep 20203 Sep 2021
14castlebiosecurity.comGoDaddy.com, LLC21 Oct 20202 Jan 202421 Oct 2023
15castlebioscience.comWild West Domains, LLC5 Jul 202220 Sep 20245 Jul 2025
16castlebionics.comGoogle, Inc.28 Jul 202128 Jul 202128 Jul 2022
17castlebiosceinces.comNameCheap, Inc.17 Mar 202329 May 202417 Mar 2024
18castlebiosciences.latNameCheap, Inc.14 Feb 202429 Feb 202414 Feb 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=castlebio

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