The WHOIS information of an domain name is a collection of many details that are publicly accessed using specific lookup Internet sites or a command line. The protocol which makes this possible has the same name and you can easily see the company where an Internet domain has been registered, the creation, expiration and last update dates in addition to the names, postal and e-mail address of the individuals listed as Registrant (owner), Administrative, Technical and Billing contacts for a specific domain address. All this info has to be valid and up-to-date constantly; if not the domain 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 legitimate. Updating the WHOIS for numerous country-code TLDs is limited, so when you register a brand new domain name, you should double-check the info that you are submitting.