Area code 513 is a telephone

area code A telephone numbering plan is a type of numbering scheme used in telecommunication to assign telephone numbers to subscriber telephones or other telephony endpoints. Telephone numbers are the addresses of participants in a telephone network, re ...

in the

North American Numbering Plan The North American Numbering Plan (NANP) is a telephone numbering plan for twenty-five regions in twenty countries, primarily in North America and the Caribbean. This group is historically known as World Zone 1 and has the international calling ...

(NANP) for the southwest of the U.S. state of

Ohio Ohio () is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Of the List of states and territories of the United States, fifty U.S. states, it is the List of U.S. states and territories by area, 34th-l ...

, including

Cincinnati Cincinnati ( ) is a city in the U.S. state of Ohio and the county seat of Hamilton County. Settled in 1788, the city is located at the northern side of the confluence of the Licking and Ohio rivers, the latter of which marks the state lin ...

and surrounding cities, such as

Forest Park A forest park is a park whose main theme is its forest of trees. Forest parks are found both in the mountains and in the urban environment. Examples Chile * Forest Park, Santiago China * Gongqing Forest Park, Shanghai * Mufushan National Fo ...

, Hamilton,

Lebanon Lebanon ( , ar, لُبْنَان, translit=lubnān, ), officially the Republic of Lebanon () or the Lebanese Republic, is a country in Western Asia. It is located between Syria to Lebanon–Syria border, the north and east and Israel to Blue ...

, West Chester, Mason, Maineville, Middletown, Milford, Norwood,

Oxford Oxford () is a city in England. It is the county town and only city of Oxfordshire. In 2020, its population was estimated at 151,584. It is north-west of London, south-east of Birmingham and north-east of Bristol. The city is home to the Un ...

, Harrison, Cleves, Miamitown and Trenton.

History

The first nationwide telephone numbering plan of 1947 divided Ohio into four numbering plan areas (NPAs), forming a quadrant layout for telecommunication services in the state.

AT&T AT&T Inc. is an American multinational telecommunications holding company headquartered at Whitacre Tower in Downtown Dallas, Texas. It is the world's largest telecommunications company by revenue and the third largest provider of mobile tel ...

assigned area code 513 to the southwestern quadrant, which included Cincinnati and

Dayton Dayton () is the sixth-largest city in the U.S. state of Ohio and the county seat of Montgomery County. A small part of the city extends into Greene County. The 2020 U.S. census estimate put the city population at 137,644, while Greater Da ...

. Due to the proliferation of cell phones and pagers in the 1990s, the numbering plan area had to be split in 1996 to provide more central office prefixes and telephone numbers. The eastern and northern portions, including Dayton, received

area code 937 Area codes 937 and 326 are telephone area codes in the North American Numbering Plan (NANP) assigned to a numbering plan area (NPA) that encompasses much of the southwestern part of the U.S. state of Ohio, including Dayton and Springfield. ...

. This made 513 largely coextensive with the Cincinnati metropolitan area, though a few outer eastern suburbs transferred to 937. In 2000, area code 283 was reserved for numbering plan area 513 to create an overlay plan. Although permissive dialing began on January 15, 2001, the implementation was suspended, because of the economic downturn and the return of telephone numbers as a result of the abandonment of service by competitive local telephone companies. Projections showed no need for an overlay code in Cincinnati until at least 2023. Prior to October 2021, area code 513 had telephone numbers assigned for the central office code 988. In 2020, ''988'' was designated nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area code, along with the neighboring area code 859, therefore transitioned to ten-digit dialing on October 24, 2021. NANP projections indicated exhaustion of central office prefixes in 513 by the fourth quarter of 2023. For relief, on December 15, 2021, the Public Utilities Commission of Ohio approved an all-service overlay plan for the numbering plan area with the new area code 283, scheduled for operation on April 28, 2023.

References

External links

{{coord, 39, 15, N, 84, 30, W, display=title 513 513 Telecommunications-related introductions in 1947