WHOIS is a protocol which makes it an easy task to see the information a specific domain has been registered with through a command line or through the use of special web-based lookup sites. This info includes the names, address and email address of the owner, administrator, technical and billing persons as well as the registrar organization the domain address has been obtained through, the creation and expiration dates. Aside from a few country-code TLDs that have specific limitations, the WHOIS details of any domain name can be changed freely whenever you want, which is quite important since according to the policies of the top-level Internet Corporation, ICANN, all details ought to be current and valid at all times. Inability to comply with these policies may lead to losing the ownership of a domain name and in many cases a domain could even be deleted from the Domain Name System and released for free registration.