The WHOIS info of a domain name is a collection of numerous details which are publicly accessed through specific lookup Internet sites or a command line. The protocol that makes this possible carries the same name and you may very easily see the organization through which an Internet domain has been registered, the creation, expiration and last update dates in addition to the names, postal and email address of the people listed as Registrant (owner), Administrative, Technical and Billing contacts for a particular Internet domain. This information should be legitimate and up-to-date all the time; if not the domain name registration may be challenged. The latter is a policy of ICANN (the Internet Corporation for Assigned Names and Numbers), this means you must always make certain that the WHOIS details of your domains are accurate. Updating the WHOIS for several country-code TLDs is limited, so when you register a new domain name, you ought to double-check the information that you're submitting.