The so-called WHOIS details of every single registered domain name contain details about the registrar company, the registration and expiration dates, along with the names, telephone number, postal address and e-mail address of the owner, the administrator and the tech/billing person. WHOIS is a special protocol that enables you to obtain all of this information either through a command line or via one of the many Internet websites that offer WHOIS lookup services. All contact details ought to be up-to-date in accordance with the regulations of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the information is not correct, the domain may be reported and the result may be its removal or losing its ownership. A number of country-specific internet domain extensions have certain limitations for the editing of their WHOIS information, but in the general case any detail can be modified openly and at any time. Such an adjustment will show up on lookup websites within 24 hours.