Whois® lookup

Do a WHOIS lookup across more than 40 domain extensions.

Perform WHOIS lookups across more than 40 domain extensions. The Whois® lookup app is essentially a bookmarklet for your home/starting page that will take you on our WHOIS lookups page, where you can do 2 types of WHOIS lookup. The WHOIS lookup tool is a hosted tool that will first give you the results of a thin query, and then if you need more detail, a thick WHOIS query. If you don't want a bookmarklet, and would prefer to do single click WHOIS lookups from a page that you are visiting, take a look at our WHOIS lookup extension for Chrome.