WHOIS is a protocol which makes it simple to view the info a particular domain has been registered with either through a command line or using special web-based lookup websites. This information includes the names, address and e-mail address of the owner, administrator, tech and billing persons along with the registrar business the domain name 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 address can be modified freely whenever you want, which is quite vital provided that based on the policies of the top-level Internet Corporation, ICANN, all details must be current and correct all of the time. Failing to comply with these policies could lead to losing the ownership of a domain address and in many cases a domain name could even be erased from the Domain Name System and released for free registration.