The specific contact information for an individual, particularly a series of digits assigned to a subscriber for telecommunication purposes, allows for direct communication. As an example, accessing this type of information enables one to contact the specified person via a telephone network. Such contact details are generally considered private and protected.
Access to and dissemination of such data raises significant privacy concerns. Maintaining control over this personal identifier is important for managing unwanted solicitations and potential security risks. Historically, the availability of such information was more widespread, but regulations and societal norms have evolved to prioritize individual privacy rights.