The WHOIS info of a domain is a collection of numerous details that are openly accessed using special lookup sites or a command line. The protocol that makes this possible has the same name and you may effortlessly see the firm through which a domain has been registered, the creation, expiration and last update dates in addition to the names, postal and e-mail address of the people listed as Registrant (owner), Administrative, Technical and Billing contacts for a particular domain address. All of this information must be valid and up-to-date all the time; if it's not the domain name registration can be challenged. The latter is a policy of ICANN (the Internet Corporation for Assigned Names and Numbers), so you must always make certain that the WHOIS details of your domain names are legitimate. Updating the WHOIS for a variety of country-code TLDs is limited, so when you register a new domain address, you ought to double-check the information you are submitting.