The so-called WHOIS details of every registered domain name include information about the registrar organization, the registration and expiration dates, plus the names, phone number, postal address and e-mail address of the owner, the administrator and the tech/billing person. WHOIS is a specific protocol that permits you to get this info either through a command line or via one of the numerous sites that provide WHOIS lookup services. All contact details should be up-to-date in line with the policies of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the details are not legitimate, the domain address could be reported and the result may be its deletion or losing its ownership. A number of country-specific domain extensions have specific limitations regarding the modification of their WHOIS info, but in the typical situation any detail can be edited openly and at any time. Such a modification will show up on lookup sites within 24 hours.