The WHOIS information of an domain is a collection of a variety of details that are openly accessed using special lookup Internet sites or a command line. The protocol that makes this possible has the same name and you may effortlessly see the company through which a domain name 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 specific domain. This information has to be valid and up-to-date constantly; if it's not the domain address registration could be challenged. The latter is a policy of ICANN (the Internet Corporation for Assigned Names and Numbers), therefore you must always make certain that the WHOIS details of your domains are valid. Updating the WHOIS for several country-code TLDs is limited, so when you register a completely new Internet domain, you ought to double-check the information that you are submitting.