When a domain name is purchased, the details you entered are added to the domain as an administrative contact. This information is then searchable by the public via a domain look up.
Scammers, identity thieves and scammers are sometimes known to target this information — especially in some countries.
Domain privacy replaces the contact information on your domain with different details. This ensures your home/business address, phone number, and email address, are kept private, hiding it from the public eye.
Rocketspark now offers Domain Privacy as a paid add-on service for .com, .net, .org, .info domain names. It is not available for domains ending in .nz or .au but some .uk domain names are eligible.