WHOIS is a protocol that makes it simple to view the info a particular domain 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 email address of the owner, admin, technical and billing persons as well as the registrar organization the domain address has been purchased through, the creation and expiration dates. Aside from a number of country-code TLDs that have specific limitations, the WHOIS details of any domain name can be modified freely anytime, which is quite necessary given that in line with the policies of the top-level Internet Corporation, ICANN, all details ought to be current and valid always. Failure to comply with these policies could lead to losing the ownership of an Internet domain and in some cases a domain might even be erased from the Domain Name System and released for free registration.