The WHOIS info of a domain is a collection of various details that are openly accessed through specific lookup Internet sites or a command line. The protocol that makes this possible has the same name and you could easily see the firm where a domain address has been registered, the creation, expiration and last update dates in addition to the names, postal and email address of the individuals listed as Registrant (owner), Administrative, Technical and Billing contacts for a particular Internet domain. All of this information has to be correct and up-to-date at all times; otherwise the domain registration could 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 domain names are legitimate. Updating the WHOIS for several country-code TLDs is limited, so whenever you register a brand new Internet domain, it is best to double-check the info you're submitting.