WHOIS is a protocol that makes it simple to see the details a specific domain name has been registered with either through a command line or 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 company the domain name has been obtained through, the creation and expiration dates. Aside from a few country-code TLDs that have specific limitations, the WHOIS information of any domain name can be changed freely whenever you want, which is quite necessary given that in accordance with the policies of the top-level Internet Corporation, ICANN, all details have to be current and correct all of the time. Failure to comply with these policies may result in losing the ownership of a domain and in some cases a domain name could even be erased from the Domain Name System and released for free registration.