WHOIS is a protocol that makes it easy to see the info a given domain has been registered with through a command line or by using special web-based lookup websites. This information includes the names, address and email address of the owner, administrator, technical and billing persons in addition to the registrar business the Internet domain has been acquired through, the creation and expiration dates. Apart from several country-code TLDs that have certain limitations, the WHOIS details of any domain name can be changed freely anytime, which is quite important provided that in accordance with the policies of the top-level Internet Corporation, ICANN, all details ought to be current and legitimate all of the time. Failing to conform with these policies may lead to losing the ownership of a domain address and in many cases a domain address could even be removed from the Domain Name System and released for free registration.