Whoisology!

Domain name research, including comprehensive Whois Lookup, Reverse Whois Lookup and Whois History. Domain name monitoring tools and buyer/seller tools...

ICANN (Internet Corporation for Assigned Names and Numbers) WHOIS search lets you lookup any generic domain to find out the registered domain owner and related information.

Domain name lookup tool that allows you to get information about domain registration from WHOIS server.

A simple, reliable, and fast lookup, of the whois database systems, for Internet domains.Also has a lookup pulling all DNS records for fully qualified domain names.

Whois.net is a lookup service for domain name search, registration and availability.

WhoZat is a dead simple but beautiful way to get whois domain name info.