The so-called WHOIS details of every registered domain name include info about the registrar company, the registration and expiration dates, as well as the names, contact number, postal address and e-mail address of the owner, the administrator and the tech/billing person. WHOIS is a special protocol that lets you get all of this info through a command line or using one of the many sites that offer WHOIS lookup services. All details should be up-to-date as per the rules of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the information is not accurate, the domain address could be reported and the result might be its removal or losing its ownership. A number of country-specific domain extensions have certain limitations concerning the modification of their WHOIS details, but in the general case any detail can be edited freely and at any moment. Such a modification will appear on lookup websites within a day.