Concealing one’s phone number when making a call involves techniques that prevent the recipient’s caller ID from displaying the originating number. This can be achieved through various methods, such as dialing a specific prefix before the intended number or utilizing features offered by the mobile carrier. For example, in some regions, dialing *67 before the phone number will block the caller ID from being displayed.
Maintaining privacy during telephone communications can be advantageous in certain situations, allowing for anonymous contact or preventing unwanted callbacks. Historically, number blocking options were primarily used by law enforcement or individuals in sensitive professions. However, with increasing awareness of privacy concerns, the practice has become more common among the general public.