The so-called WHOIS details of every registered domain include information regarding the registrar organization, the registration and expiration dates, plus the names, phone number, postal address and e-mail address of the owner, the admin and the tech/billing person. WHOIS is a specific protocol that lets you obtain all this info through a command line or through one of the many sites which provide WHOIS lookup services. All info ought to be up-to-date as per the regulations of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the details are not legitimate, the domain address can be reported and the result might be its deletion or losing its ownership. A few country-specific domain name extensions have certain limitations for the change of their WHOIS information, but in the general case any detail can be edited easily and at any moment. Such an adjustment will appear on lookup Internet sites within a day.