The WHOIS information of a domain is a collection of numerous details that are freely accessed using specific lookup Internet sites or a command line. The protocol that makes this possible carries the same name and you may effortlessly see the organization through which a domain address has been registered, the creation, expiration and last update dates along with the names, postal and e-mail address of the people listed as Registrant (owner), Administrative, Technical and Billing contacts for a specific domain. This information has to be legitimate and up-to-date at all times; otherwise the Internet domain registration can be challenged. The latter is a policy of ICANN (the Internet Corporation for Assigned Names and Numbers), therefore you should always make sure that the WHOIS details of your domain addresses are legitimate. Updating the WHOIS for a number of country-code TLDs is limited, so when you register a completely new domain, it is best to double-check the info you're submitting.