The process of concealing one’s telephone number when placing a call is achieved through various methods. These methods prevent the recipient from viewing the caller’s identifying information on their caller ID display. For example, dialing *67 before the intended phone number is a common technique on landlines in certain regions to block the outgoing number from being displayed.
Maintaining privacy during telephone communications can be crucial for whistleblowers, journalists protecting sources, or individuals needing to report sensitive information. Historically, call blocking was less common, but growing concerns about privacy and unwanted solicitation have increased the need for, and availability of, such services. The option provides a layer of security and control over personal information in an increasingly connected world.