WHOIS is a protocol which makes it possible to view the details a particular domain name has been registered with through a command line or using special web-based lookup websites. This information includes the names, address and email address of the owner, administrator, tech and billing persons along with the registrar business the Internet domain has been acquired through, the creation and expiration dates. Aside from a few country-code TLDs that have certain limitations, the WHOIS info of any domain address can be changed freely whenever you want, which is quite important provided that in line with the policies of the top-level Internet Corporation, ICANN, all details ought to be current and legitimate all of the time. Inability to comply with these policies could lead to losing the ownership of a domain address and in many cases a domain might even be erased from the Domain Name System and released for free registration.