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