The WHOIS info of a domain is a collection of various details that are openly accessed through special lookup websites or a command line. The protocol which makes this possible carries the same name and you may effortlessly see the firm where a domain name has been registered, the creation, expiration and last update dates along with the names, postal and e-mail address of the people listed as Registrant (owner), Administrative, Technical and Billing contacts for a specific Internet domain. All of this info must be correct and up-to-date all the time; if it's not the domain address registration may be challenged. The latter is a policy of ICANN (the Internet Corporation for Assigned Names and Numbers), so you must always ensure that the WHOIS details of your domains are legitimate. Updating the WHOIS for a variety of country-code TLDs is limited, so whenever you register a new domain name, you should double-check the info you're submitting.