The process of blocking one’s telephone number from appearing on the recipient’s caller ID display is a feature available on most modern telecommunication systems. This function allows the caller to maintain anonymity when placing a call, preventing the receiver from readily identifying the origin of the incoming communication. For instance, employing a prefix code or adjusting device settings can mask the outgoing number.
Privacy considerations are often central to the use of this feature. It provides a means to control the dissemination of personal contact information and can be particularly relevant in situations involving sensitive communications or when initiating contact with unknown parties. Historically, this functionality evolved alongside caller ID technology as a countermeasure to maintain a degree of control over personal information in an increasingly connected world.