Domain Whois Lookup allow you to Check if the domain name you want already registered or not.

If you need to know the owner of a domain name, just check the Domain Whois Database. its that easy.

Did you forget who your own domain registrar is? Can't remember where you bought your domain name? Domain name WHOIS records provide the informations.. that help you regain control of your domain name.

Domain WHOIS lookup database searches multiple registrar whois databases to give you domain registration information on many different extensions, regardless of where they are registered. WHOIS search results report you registration and expiration dates and registrant details contact information (if public). You also simply find out who to contact to purchase a domain name that is currently unused.

Some Domain Whois Lookup Sites Are :

www.iwhois.com
www.whois.net
www.allwhois.com
www.betterwhois.com