A specific individual’s contact information, expressed as a sequence of digits permitting direct communication via a telephone network, constitutes a personal identifier. For example, a string of ten numerical characters, adhering to a North American Numbering Plan format, enables connection to a particular subscriber’s device.
This information allows immediate connection for diverse purposes, ranging from personal correspondence to professional inquiries. Its value lies in its capacity to provide instantaneous communication. Historically, the assignment and utilization of such numerical identifiers have evolved alongside advancements in telecommunications infrastructure, reflecting shifts in social interaction and business practices.