WHOIS is a protocol which makes it possible to view the info a specific domain name has been registered with either through a command line or using special web-based lookup websites. This info includes the names, address and e-mail address of the owner, administrator, tech and billing persons as well as the registrar company the domain address has been purchased through, the creation and expiration dates. Apart from a number of country-code TLDs that have specific limitations, the WHOIS information of any domain name can be changed freely at any time, which is quite vital since in line with the policies of the top-level Internet Corporation, ICANN, all details must be current and correct always. Inability to comply with these policies could lead to losing the ownership of a domain address and in some cases a domain could even be erased from the Domain Name System and released for free registration.