The WHOIS info of an 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 could effortlessly see the company through which a domain has been registered, the creation, expiration and last update dates as well as the names, postal and email address of those listed as Registrant (owner), Administrative, Technical and Billing contacts for a particular domain name. All of this information should be correct and up-to-date constantly; otherwise the domain name registration may be challenged. The latter is a policy of ICANN (the Internet Corporation for Assigned Names and Numbers), therefore you should always make certain that the WHOIS details of your domains are valid. Updating the WHOIS for numerous country-code TLDs is limited, so when you register a completely new domain address, it is best to double-check the information that you are submitting.