The WHOIS info of a domain name is a collection of many details that are openly accessed using special lookup websites or a command line. The protocol which makes this possible has the same name and you can effortlessly see the company where a domain address has been registered, the creation, expiration and last update dates together with 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 has to be correct and up-to-date constantly; otherwise the domain registration can be challenged. The latter is a policy of ICANN (the Internet Corporation for Assigned Names and Numbers), this means you must always make certain 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 new domain name, you ought to double-check the information you are submitting.