The WHOIS information of a domain name is a collection of a variety of details that 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 easily see the organization through which a domain name has been registered, the creation, expiration and last update dates along with 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 information ought to be correct and up-to-date at all times; if not the domain registration may be challenged. The latter is a policy of ICANN (the Internet Corporation for Assigned Names and Numbers), this means you must always make sure that the WHOIS details of your domain names are legitimate. Updating the WHOIS for a number of country-code TLDs is limited, so when you register a new domain address, it is best to double-check the information you are submitting.