The numeric sequence identifies a specific geographic region within the North American Numbering Plan (NANP). It serves as a prefix for telephone numbers within central Ohio. For example, a phone number within this region would begin with this sequence followed by a seven-digit number.
This identifier is crucial for directing telecommunications traffic to the appropriate local exchange carrier and ultimately to the intended recipient. Its implementation facilitated the expansion of telephone services and supported the growth of business and personal communication within the designated area. Originally established in 1947 as one of the original area codes, it reflects the population and telecommunication needs of the region at that time.