The so-called WHOIS details of each registered domain include information about the registrar company, the registration and expiration dates, along with the names, telephone number, postal address and e-mail address of the owner, the admin and the tech/billing person. WHOIS is a specific protocol that enables you to retrieve all of this information either through a command line or by using one of the many sites which provide WHOIS lookup services. All info ought to be up-to-date in accordance with the regulations of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the information is not legitimate, the domain can be reported and the result could be its deletion or losing its ownership. Some country-specific domain address extensions have certain limitations regarding the editing of their WHOIS info, but in the general case any detail can be modified openly and at any time. Such a change will appear on lookup Internet sites within 24 hours.