Privacy protection is also called WHOIS protection, which hides the personal data of the domain owner. When you enable this protection through a WHOIS lookup, they cannot be seen.
WHOIS is an international organization that stores and provides, upon request, domain and registrar information. Such data contains the time of registration and the expiration of the registration period, the user who registered, and the paths that the domains are directed to.
A request for a search by domain names in the WHOIS databases can be made to anyone, after that, having received the necessary information. Privacy protection refers to the optional settings. It can hide data if the user wishes to remain anonymous.
Not everyone needs WHOIS protection, however, when you start changing your name, address, phone number and e-mail, the name of the organization with data that does not identify you, such a service will be very necessary.