WHOIS is a protocol that makes it possible to see 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 e-mail address of the owner, admin, technical and billing persons in addition to the registrar business the Internet domain has been obtained through, the creation and expiration dates. With the exception of some country-code TLDs that have specific limitations, the WHOIS info of any domain address can be modified freely whenever you want, which is quite important since in line with the policies of the top-level Internet Corporation, ICANN, all details ought to be current and correct always. Inability to comply with these policies may result in losing the ownership of an Internet domain and in some cases a domain could even be erased from the Domain Name System and released for free registration.