The WHOIS info of an domain is a collection of many details that are publicly accessed through special lookup sites or a command line. The protocol that makes this possible carries the same name and you may very easily see the organization through which a domain address has been registered, the creation, expiration and last update dates as well as the names, postal and email address of the people listed as Registrant (owner), Administrative, Technical and Billing contacts for a specific domain address. This info must be correct and up-to-date all the time; if not the Internet domain registration could be challenged. The latter is a policy of ICANN (the Internet Corporation for Assigned Names and Numbers), this means you should always ensure that the WHOIS details of your domain names are valid. Updating the WHOIS for numerous country-code TLDs is limited, so when you register a completely new domain address, make sure you double-check the information you're submitting.
