When you register a domain, certain information, including contact details such as your phone number, may be collected as part of the domain registration process. This information is typically required by domain registrars to comply with ICANN (Internet Corporation for Assigned Names and Numbers) regulations and to ensure the accuracy and transparency of domain ownership.
Even if you choose to lock your WHOIS information, which helps protect your personal details from being publicly accessible, the registrar may still require you to provide your contact information for administrative purposes and legal requirements.
It's important to review the privacy policies and terms of service of your domain registrar to understand how they handle and protect your personal information. Some registrars offer additional privacy services or domain privacy protection features that help shield your contact information from public view by substituting it with generic proxy information.
If you have concerns about the use or visibility of your personal information, it's advisable to contact your domain registrar directly and inquire about their privacy measures and options available to protect your contact details.