Not everyone wants to keep their personal information available to the public, especially with all the cybersecurity threats looming over everyone online. This is why most domain registrars offer an additional extra called ID protection, which basically masks your registrant data, replacing it with fake details. Should you need the information public again (like in cases of a domain transfer), you can switch the option off. Depending on the provider, domain ID protection is either available for free or for a nominal fee.