The so-called WHOIS details of each registered domain name include info about the registrar organization, the registration and expiration dates, as well as the names, telephone number, postal address and email address of the owner, the administrator and the tech/billing person. WHOIS is a special protocol that lets you obtain all of this info either through a command line or via one of the many websites that offer WHOIS lookup services. All info must be up-to-date in accordance with the regulations of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the info is not legitimate, the domain may be reported and the result could be its deletion or losing its ownership. A few country-specific domain name extensions have specific limitations concerning the change of their WHOIS information, but in the standard case any detail can be edited openly and at any time. Such an adjustment will appear on lookup sites within a day.