WHOIS privacy protection is a service that hides your personal contact information -- such as your name, address, phone number, and email -- from the public WHOIS database. Without it, anyone can look up your domain and see who owns it, which can lead to spam, unwanted sales calls, and potential security risks. Many registrars now include WHOIS privacy for free with domain registration. Note that .ca domains managed by CIRA already have privacy protections built in for individual registrants under Canadian privacy law.