WHOIS is a protocol that makes it an easy task to view the details a specific domain name has been registered with through a command line or through the use of special web-based lookup websites. This information includes the names, address and email address of the owner, admin, tech and billing persons along with the registrar company the Internet domain has been obtained through, the creation and expiration dates. Except for some country-code TLDs that have certain limitations, the WHOIS details of any domain name can be modified freely at any time, which is quite vital since in accordance with the policies of the top-level Internet Corporation, ICANN, all details must be current and valid all of the time. Failure to comply with these policies may lead to losing the ownership of a domain name and in some cases a domain could even be deleted from the Domain Name System and released for free registration.