The so-called WHOIS details of every single registered domain contain info about the registrar company, the registration and expiration dates, plus the names, telephone number, postal address and email address of the owner, the administrator and the tech/billing person. WHOIS is a specific protocol that lets you obtain this information either through a command line or using one of the many websites that offer WHOIS lookup services. All details should be up-to-date in accordance with the policies of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the info is not legitimate, the domain address might be reported and the result could be its removal or losing its ownership. Several country-specific internet domain extensions have certain limitations for the modification of their WHOIS details, but in the general scenario any detail can be changed openly and at any moment. Such a change will show up on lookup Internet sites within 1 day.