The WHOIS information of a domain is a collection of many details which are freely accessed using specific lookup websites or a command line. The protocol that makes this possible carries the same name and you could very easily see the organization where an Internet domain has been registered, the creation, expiration and last update dates as well as the names, postal and email address of the individuals listed as Registrant (owner), Administrative, Technical and Billing contacts for a particular domain address. This info must be correct and up-to-date at all times; if it's not the domain name registration could be challenged. The latter is a policy of ICANN (the Internet Corporation for Assigned Names and Numbers), this means you should always make certain that the WHOIS details of your domain names are legitimate. Updating the WHOIS for a variety of country-code TLDs is limited, so any time you register a completely new domain, you should double-check the information you are submitting.
