The so-called WHOIS details of every registered domain name contain information regarding the registrar organization, the registration and expiration dates, plus 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 retrieve all of this information either through a command line or using one of the numerous websites that provide WHOIS lookup services. All contact details should be up-to-date in accordance with the rules of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the details are not legitimate, the domain can be reported and the result may be its removal or losing its ownership. A few country-specific domain name extensions have specific limitations concerning the modification of their WHOIS info, but in the standard scenario any detail can be changed easily and at any time. Such an adjustment will show up on lookup Internet sites within a day.