Domain privacy or sometimes referred to as "Domain Protection" is a tool that most web hosting providers use to hide personal information like the domain holder's email address, phone number and postal address on Whois. Domain Privacy is used to stop anonymous people like spammers, identity thieves, or other attackers to use the directory to gain access to the domain holder's private details.
Domain Privacy is only required for Global Domain names such as .COM .NET. INFO and the like. Domain privacy can not be enabled on .AU domains due to auDA regulations, there is far less registrant information viewable publicly for these domains.
What Does My Domain Look Like when I Have Domain Privacy Enabled?
With Domain Privacy & Without
Do I have to pay for Domain Privacy?
Domain Privacy can be added to your domain for $10 per year.
How do I enable Domain Privacy?
It is not possible to enable/disable Domain Privacy within your 'My Account' portal. This feature is currently not available. You will need to contact Crucial to have it enabled/disabled.