Free Domain


Free whois API and free domain availability checks.

1 request per minute for free!

Stop waiting

Signup now, and start using our API within minutes. No installation necessary!

Low cost

Service is low cost and in some cases may be free with up to 1 request per minute.


If you expect email support, high quality and thousands of requests, signup at WhoAPI for a premium service.

Extremely Easy

One line of code does wonders with our API. Even junior developers can integrate them.

All the top TLDs

API supports all major ccTLDs and top gTLDs that exist.

Free Whois API

Parsed whois API with JSON response. Make http requests with PHP, JavaScript, Ruby or Objective C.