WHOIS is a protocol that makes it an easy task to view the info a given domain name has been registered with either through a command line or through the use of special web-based lookup websites. This info includes the names, address and e-mail address of the owner, admin, tech and billing persons along with the registrar company the domain name has been acquired through, the creation and expiration dates. Aside from a few country-code TLDs that have certain limitations, the WHOIS information of any Internet domain can be changed freely whenever you want, which is quite necessary 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. Failure to comply with these policies may result in losing the ownership of a domain and in many cases a domain name may even be removed from the Domain Name System and released for free registration.