A numerical prefix assigned to telephone numbers within the state of North Carolina, facilitating call routing within the North American Numbering Plan. For example, the figures 704 are utilized in the Charlotte metropolitan area for this function.
These prefixes are critical infrastructure for telecommunications, enabling efficient connection of calls across the state and beyond. Their establishment reflects population density, regional growth, and the increasing demand for telephone lines and mobile devices. The history of these codes in the state mirrors its economic and demographic evolution.