The so-called WHOIS details of every registered domain include information regarding the registrar company, the registration and expiration dates, plus 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 allows you to get this information through a command line or using one of the numerous Internet websites that offer WHOIS lookup services. All information 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 info is not legitimate, the domain address may be reported and the result could be its deletion or losing its ownership. A few country-specific internet domain extensions have certain limitations in connection with the modification of their WHOIS info, but in the general scenario any detail can be modified openly and at any moment. Such an adjustment will show up on lookup sites within a day.