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 The North American Numbering Plan (NANP) is an integrated 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, World Numbering Zone ...

(NANP) for the

U.S. State In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its so ...

Georgia Georgia most commonly refers to: * Georgia (country), a country in the South Caucasus * Georgia (U.S. state), a state in the southeastern United States Georgia may also refer to: People and fictional characters * Georgia (name), a list of pe ...

in the

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

. The area codes are assigned in an

overlay plan In telecommunications, an area code overlay complex is a telephone numbering plan that assigns multiple area codes to the same geographic numbering plan area (NPA). Area code overlays are implemented in territories of the North American Numbe ...

to a combined numbering plan area (NPA) consisting of 404 (Atlanta and its suburbs inside Interstate 285) and 770 (Atlanta

suburb A suburb (more broadly suburban area) is an area within a metropolitan area. They are oftentimes where most of a metropolitan areas jobs are located with some being predominantly residential. They can either be denser or less densely populated ...

s and

exurb An exurb (or alternately: exurban area) is an area outside the typically denser inner suburbs, suburban area, at the edge of a metropolitan area, which has some economic and commuting connection to the metro area, low housing-density, and rela ...

s outside of I-285).

History

Telephone number A telephone number is the address of a Telecommunications, telecommunication endpoint, such as a telephone, in a telephone network, such as the public switched telephone network (PSTN). A telephone number typically consists of a Number, sequ ...

s 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 Ten-digit dialing is a telephone dialing procedure in the countries and territories of the North American Numbering Plan (NANP). It is the practice of including the area code of a telephone number when Dialling (telephony), dialing to initiate a t ...

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 area code 404 are assigned to service providers, the last having been issued in October 2013. Prefixes in 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 Kennesaw State University (KSU) is a public research university in the U.S. state of Georgia with two campuses in the Atlanta metropolitan area, one in the Kennesaw area and the other in Marietta on a combined of land. The school was founded ...

in Kennesaw, which was forced to change hundreds of telephone numbers when the

Georgia Board of Regents The Georgia Board of Regents oversees the University System of Georgia as part of the state government of Georgia in the United States. The University System of Georgia is composed of all state public institutions of higher education in the state ...

forced schools in the

University System of Georgia The University System of Georgia (USG) is the government agency that includes 26 public institutions of higher learning in the U.S. state of Georgia. The system is governed by the Georgia Board of Regents. It sets goals and dictates gener ...

to implement internal telephone systems, and the FCC failed to make

local number portability Local number portability (LNP) for fixed lines, and full mobile number portability (FMNP) for mobile phone lines, refers to the ability of a "customer of record" of an existing fixed-line or mobile telephone number assigned by a local exchange c ...

applicable to businesses and government, allowing

AT&T AT&T Inc., an abbreviation for its predecessor's former name, the American Telephone and Telegraph Company, is an American multinational telecommunications holding company headquartered at Whitacre Tower in Downtown Dallas, Texas. It is the w ...

to refuse KSU to take its numbers to the new provider. Kennesaw State 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 is located in the Atlanta Northwest calling area. The entire metro Atlanta region with area codes 404, 770, 678, 470, and 943 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 disconnecte ...

, 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, Bartow, Butts, Carroll,

Cherokee The Cherokee (; , or ) people are one of the Indigenous peoples of the Southeastern Woodlands of the United States. Prior to the 18th century, they were concentrated in their homelands, in towns along river valleys of what is now southwestern ...

, Clayton, Cobb, 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 the 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 gre ...

, Haralson,

Henry Henry may refer to: People and fictional characters * Henry (given name), including lists of people and fictional characters * Henry (surname) * Henry, a stage name of François-Louis Henry (1786–1855), French baritone Arts and entertainmen ...

, Heard (part with

), Lamar, Meriwether (part with

), 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)

History

Service area

See also

References

External links