The so-called WHOIS details of any registered domain include information about the registrar company, the registration and expiration dates, and also the names, contact number, postal address and e-mail address of the owner, the administrator and the tech/billing person. WHOIS is a specific protocol that lets you obtain all of this information through a command line or via one of the numerous Internet websites that provide WHOIS lookup services. All information ought to be up-to-date in line with the regulations of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the information is not legitimate, the domain name might be reported and the result might be its deletion or losing its ownership. Several country-specific domain address extensions have specific limitations regarding the modification of their WHOIS details, but in the general case any detail can be changed freely and at any moment. Such a change will appear on lookup Internet sites within twenty four hours.