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