WHOIS is a protocol that makes it easy to see the information a particular domain name has been registered with either through a command line or with the help of special web-based lookup websites. This information includes the names, address and e-mail address of the owner, administrator, tech and billing persons in addition to the registrar business the domain address has been purchased through, the creation and expiration dates. Apart from some country-code TLDs that have certain limitations, the WHOIS details of any domain name can be changed freely at any time, which is quite vital considering that based on the policies of the top-level Internet Corporation, ICANN, all details ought to be current and valid always. Inability to conform with these policies could lead to losing the ownership of an Internet domain and in many cases a domain address could even be removed from the Domain Name System and released for free registration.