WHOIS is a protocol which makes it an easy task to see the information a specific domain name has been registered with through a command line or by using special web-based lookup websites. This information includes the names, address and e-mail address of the owner, administrator, technical and billing persons plus the registrar organization the Internet domain has been obtained through, the creation and expiration dates. Aside from a few country-code TLDs that have certain limitations, the WHOIS info of any domain name can be modified freely whenever you want, which is quite important provided that based on the policies of the top-level Internet Corporation, ICANN, all details must be current and correct always. Failing to comply with these policies could lead to losing the ownership of a domain name and in many cases a domain may even be erased from the Domain Name System and released for free registration.