This three-digit numerical identifier is a specific geographic code assigned within a telephone numbering plan. It delineates a particular region for call routing purposes. For example, calls originating from or destined for telephone numbers within this area require the inclusion of this code for proper connection.
Such codes are essential for efficient telecommunications infrastructure, facilitating the allocation and management of telephone numbers across a defined territory. Their introduction and subsequent evolution have mirrored the growth of telephone networks and the increasing demand for distinct numbering resources. They provide a structured method for organizing and directing telecommunication traffic.