Area codes 678, 470, and 943 are 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, rea ...

s in the North American Numbering Plan (NANP) for the U.S. State of Georgia in the

Atlanta metropolitan area Metro Atlanta, designated by the United States Office of Management and Budget as the Atlanta–Sandy Springs–Alpharetta, GA Metropolitan Statistical Area, is the most populous metropolitan statistical area in the U.S. state of Georgia and the ...

. The area codes are assigned in an overlay plan to a combined numbering plan area (NPA) consisting of

404 404 may refer to: * 404 (number) * AD 404 * 404 BC * HTTP 404, the HTTP error response status for "Not Found" Cars * Peugeot 404 * Bristol 404, produced in the 1950s * Unimog 404 Highways * A404(M) motorway, in England * Ontario Highway 40 ...

(Atlanta and its suburbs inside Interstate 285) and 770 (Atlanta

suburb A suburb (more broadly suburban area) is an area within a metropolitan area, which may include commercial and mixed-use, that is primarily a residential area. A suburb can exist either as part of a larger city/urban area or as a separate ...

s and exurbs outside of 285).

History

Telephone numbers in area code 678 were first assigned to customers signing up for new telephone service on January 15, 1998. On September 2, 2001, area code 470, was added to the 678 overlay area of area codes 404 and 770. Telephone numbers from the NPA were assigned after exhaustion of area code 678. In October of 2020, the Georgia Public Service Commission approved the creation of a new overlay area code after NANPA exhaustion analyses projected shortfall of central office prefixes by the second quarter of 2023. NANPA assigned area code 943 for relief, which commenced service on March 15, 2022. Although ten-digit dialing was used in the Atlanta area since area code 770 was introduced in 1995, it was not until January 1, 1998, when 678 was implemented, that ten-digit dialing finally became required across the entire metro area. All central office prefixes of numbering plan area 404 are assigned to service providers, the last having been issued in October 2013. Prefixes 678 and 770 have also all been allocated, leaving only 470 central office codes available, although previously-used numbers are always available for reassignment to new customers. Despite existing for decades before this change, the largest customer using area code 470 is Kennesaw State University in Kennesaw, which was forced to change hundreds of telephone numbers when the Georgia Board of Regents forced schools in the University System of Georgia to implement internal telephone systems, and the FCC failed to make local number portability applicable to businesses and government, allowing AT&T to refuse KSU to take its numbers to the new provider. Kennesaw State University opted to use 470-578 (KSU) as their number prefix for the new phone numbers, outside of the normal geographical calling area for Kennesaw; 470-578 numbers are based in Atlanta Northeast and Kennesaw State University is located in the Atlanta Northwest calling area. The entire metro Atlanta region with area codes 404, 770, 678, and 470, is a local calling area, one of the largest in the United States, without long-distance charges for calls between area codes. All calls in the area are dialed with ten digits. In addition, calls to and from the Atlanta area with

area codes 706 and 762 Area codes 706 and 762 are telephone area codes in the North American Numbering Plan (NANP) for the northern and west central parts of Georgia, but excluding metropolitan Atlanta. The numbering plan area (NPA) is divided into three disconnec ...

, which serve most of north Georgia outside the metro area, are also local calls.

Service area

The numbering plan area 678/470/943 includes the counties of

Barrow Barrow may refer to: Places England * Barrow-in-Furness, Cumbria ** Borough of Barrow-in-Furness, local authority encompassing the wider area ** Barrow and Furness (UK Parliament constituency) * Barrow, Cheshire * Barrow, Gloucestershire * Barro ...

, Bartow, Butts, Carroll, Cherokee, Clayton,

Cobb Cobb may refer to: People * Cobb (surname), a list of people and fictional characters with the surname Cobb * Cobb Rooney (1900–1973), American professional football running back Places New Zealand * Cobb River * Cobb Reservoir * Cobb Power ...

, Coweta, DeKalb, Douglas, Fayette, Forsyth, Fulton, Gwinnett,

Hall In architecture, a hall is a relatively large space enclosed by a roof and walls. In the Iron Age and early Middle Ages in northern Europe, a mead hall was where a lord and his retainers ate and also slept. Later in the Middle Ages, the gr ...

, Haralson, Henry, Heard (part with

), Lamar, Meriwether (part with

Newton Newton most commonly refers to: * Isaac Newton (1642–1726/1727), English scientist * Newton (unit), SI unit of force named after Isaac Newton Newton may also refer to: Arts and entertainment * ''Newton'' (film), a 2017 Indian film * Newton ( ...

, Oconee, Paulding, Pike, Polk, Rockdale, Spalding, and Walton.

References

External links

List of exchanges from Phone-Caller.com, 678 Area Code
{{DEFAULTSORT:678 Area codes in the United States Area codes in Georgia (U.S. state) 1998 establishments in Georgia (U.S. state) 2010 establishments in Georgia (U.S. state)