WHOIS is a protocol that makes it possible to see the details a given domain name has been registered with through a command line or using special web-based lookup websites. This information includes the names, address and email address of the owner, admin, tech and billing persons plus the registrar business the domain has been purchased through, the creation and expiration dates. Except for a number of country-code TLDs that have specific limitations, the WHOIS details of any domain address can be changed freely whenever you want, which is quite necessary provided that in line with the policies of the top-level Internet Corporation, ICANN, all details ought to be current and valid always. Failing to conform with these policies could lead to losing the ownership of a domain and in many cases a domain name may even be deleted from the Domain Name System and released for free registration.