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Area codes 213 and 323

August 21, 2023

Area codes 213 and 323 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of California. They are assigned in an overlay complex to a numbering plan area (NPA) that comprises, roughly, the area of central Los Angeles, including several Southeast LA communities, such as Bell and Huntington Park. Area code 213 was one of the original North American area codes of 1947 and 323 was created in an area code split of 213 in 1998. This was the fifth split of 213 and left it serving only downtown Los Angeles and immediately adjoining neighborhoods. In 2017, the two NPAs were recombined in the overlay.

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Numbering plan areas in California (blue) and border states.

Area code 738 has been selected as an additional overlay area code for activation in November 2024.

History

In 1947, when the American Telephone and Telegraph Company (AT&T) devised the first nationwide telephone numbering plan and assigned the original North American area codes, the state of California was divided into three numbering plan areas: 213, 415, and 916, for the southern, central, and northern parts of the state, respectively.[1] The area served by 213 extended from Mexican border to the Central Coast. In 1950, the boundary between 213 and 415 was realigned toward the north, requiring the southern portion of the Central Valley, including Bakersfield, to change from area code 415 to 213.

As a result of southern California's rapid expansion of telephone service during the second half of the 20th century, area code 213 was split five times in the period from 1951 to 1998. In the 21st century area code overlays have become more practical.

1951–1998: Area code splits

The first split became necessary in 1951, when most of the southern and eastern portion, including San Diego and most of Orange County, was assigned area code 714. In 1957, 213 was restricted to Los Angeles County, with most of the northern and western portions receiving area code 805. This configuration was stable for almost three decades, until 1984, when the San Fernando Valley and the San Gabriel Valley received area code 818, thus making Los Angeles one of the first major cities in the US to be split into two numbering plan areas—New York City experienced this later in the same year. In 1991, West Los Angeles and the South Bay were assigned area code 310.[2]

In 1998, the Los Angeles NPA was divided once more, to create area code 323.[3] Area code 213 was kept by Los Angeles exchanges 1 (Downtown/Echo Park), 7 (South Park/Exposition Park) and 10 (Westlake/Koreatown), while exchanges 2 (Silverlake/Los Feliz), 3 (Eagle Rock/Highland Park), 4 (El Sereno/Lincoln Heights), 5 (Boyle Heights/East Los Angeles), 6 (Watts/Vernon/South Gate), 8 (South Los Angeles), 9 (Hyde Park/Athens), 11 (West Adams/Jefferson Park), 12 (Leimert Park/Baldwin Hills), 13 (Hancock Park/Fairfax District) and 14 (Hollywood/Hollywood Hills) switched to area code 323. This split made 213 one of the geographically smallest numbering plan areas in the nation, covering only Downtown Los Angeles and its immediately adjoining neighborhoods, such as Chinatown. Completely surrounding 213, 323 included most of the remainder of central Los Angeles, including Hollywood, as well as several neighboring cities, including Bell, Huntington Park and Montebello.[4]

Since 2017: Overlay codes

Despite Southern California's continued growth and the proliferation of cell phones and pagers, 213 was not projected to exhaust until 2050. In contrast, 323 was projected to exhaust in 2017.[4] Since 213 still had an abundance of numbers available, the California Public Utilities Commission approved a plan that erased the boundaries between both area codes, converting the area to an overlay complex for all of central Los Angeles. Since this change went into full effect on July 8, 2017, telephone companies have been able to assign any available 213 numbers in the former 323 area and vice versa, and customers have been required to dial the area code for all calls.[5][6] This change returned 213 to some areas that had used it for more than half a century prior to 1998.[3] Even so, within five years of the boundary elimination, it was determined that further relief would be required for 213/323.

Based on exhaustion studies of the numbering plan area, the California Public Utilities Commission approved an additional all-services overlay code on March 16, 2023, by selection of area code 738.[7][8] The projected in-service date is November 1, 2024.

Service area

Cities and communities in the overlay complex include:[3][9]

See also

References

  1. ^ Mabbs, Ralph (Winter 1947–1948). "Nation-Wide Operator Toll Dialing—the Coming Way". Bell Telephone Magazine. 26 (4): 181. Retrieved 2023-07-01.
  2. ^ NANPA, Bellcore Information Letter IL-90/08-055
  3. ^ a b c Prosper, Terry (2016-07-14). "CPUC Provides For More Phone Numbers in 323 Area Code" (PDF). California Public Utilities Commission website. Retrieved 2017-08-24.
  4. ^ a b "323 Area Code". California Public Utilities Commission website. Retrieved August 24, 2017.
  5. ^ "April 2015 NPA Exhaust Projections" (PDF). Nanpa.com.
  6. ^ "Application of the North American Numbering Plan Administrator" (PDF). cpuc.ca. November 24, 2015. Retrieved April 11, 2023.
  7. ^ Area Codes and Numbering, California Public Utilities Commission (Retrieved 2023-06-28).
  8. ^ "Planning Letters" (PDF). NANPA. 2023-05-16. Retrieved 2023-06-25.
  9. ^ "323 Area Code Background". California Public Utilities Commission website. Retrieved August 24, 2017.

External links

  • NANPA area code map of California
  • California Public Utilities Commission's "Report on the 213 Area Code
  • 213 Area Code - Southern California
  • 323 Area Code - Southern California

California area codes: 209, 213/323, 279/916, 310/424, 341/510, 408/669, 415/628, 442/760, 530, 559, 562, 619/858, 626, 650, 657/714, 661, 707, 747/818, 805/820, 831, 840/909, 925, 949, 951
North: 747/818, 626
West: 310/424 213/323 East: 626
South: 310/424, 562

August 21, 2023
area, codes, telephone, area, codes, north, american, numbering, plan, nanp, state, california, they, assigned, overlay, complex, numbering, plan, area, that, comprises, roughly, area, central, angeles, including, several, southeast, communities, such, bell, h. Area codes 213 and 323 are telephone area codes in the North American Numbering Plan NANP for the U S state of California They are assigned in an overlay complex to a numbering plan area NPA that comprises roughly the area of central Los Angeles including several Southeast LA communities such as Bell and Huntington Park Area code 213 was one of the original North American area codes of 1947 and 323 was created in an area code split of 213 in 1998 This was the fifth split of 213 and left it serving only downtown Los Angeles and immediately adjoining neighborhoods In 2017 the two NPAs were recombined in the overlay Numbering plan areas in California blue and border states Area code 738 has been selected as an additional overlay area code for activation in November 2024 Contents 1 History 1 1 1951 1998 Area code splits 1 2 Since 2017 Overlay codes 2 Service area 3 See also 4 References 5 External linksHistory EditIn 1947 when the American Telephone and Telegraph Company AT amp T devised the first nationwide telephone numbering plan and assigned the original North American area codes the state of California was divided into three numbering plan areas 213 415 and 916 for the southern central and northern parts of the state respectively 1 The area served by 213 extended from Mexican border to the Central Coast In 1950 the boundary between 213 and 415 was realigned toward the north requiring the southern portion of the Central Valley including Bakersfield to change from area code 415 to 213 As a result of southern California s rapid expansion of telephone service during the second half of the 20th century area code 213 was split five times in the period from 1951 to 1998 In the 21st century area code overlays have become more practical 1951 1998 Area code splits Edit The first split became necessary in 1951 when most of the southern and eastern portion including San Diego and most of Orange County was assigned area code 714 In 1957 213 was restricted to Los Angeles County with most of the northern and western portions receiving area code 805 This configuration was stable for almost three decades until 1984 when the San Fernando Valley and the San Gabriel Valley received area code 818 thus making Los Angeles one of the first major cities in the US to be split into two numbering plan areas New York City experienced this later in the same year In 1991 West Los Angeles and the South Bay were assigned area code 310 2 In 1998 the Los Angeles NPA was divided once more to create area code 323 3 Area code 213 was kept by Los Angeles exchanges 1 Downtown Echo Park 7 South Park Exposition Park and 10 Westlake Koreatown while exchanges 2 Silverlake Los Feliz 3 Eagle Rock Highland Park 4 El Sereno Lincoln Heights 5 Boyle Heights East Los Angeles 6 Watts Vernon South Gate 8 South Los Angeles 9 Hyde Park Athens 11 West Adams Jefferson Park 12 Leimert Park Baldwin Hills 13 Hancock Park Fairfax District and 14 Hollywood Hollywood Hills switched to area code 323 This split made 213 one of the geographically smallest numbering plan areas in the nation covering only Downtown Los Angeles and its immediately adjoining neighborhoods such as Chinatown Completely surrounding 213 323 included most of the remainder of central Los Angeles including Hollywood as well as several neighboring cities including Bell Huntington Park and Montebello 4 Since 2017 Overlay codes Edit Despite Southern California s continued growth and the proliferation of cell phones and pagers 213 was not projected to exhaust until 2050 In contrast 323 was projected to exhaust in 2017 4 Since 213 still had an abundance of numbers available the California Public Utilities Commission approved a plan that erased the boundaries between both area codes converting the area to an overlay complex for all of central Los Angeles Since this change went into full effect on July 8 2017 telephone companies have been able to assign any available 213 numbers in the former 323 area and vice versa and customers have been required to dial the area code for all calls 5 6 This change returned 213 to some areas that had used it for more than half a century prior to 1998 3 Even so within five years of the boundary elimination it was determined that further relief would be required for 213 323 Based on exhaustion studies of the numbering plan area the California Public Utilities Commission approved an additional all services overlay code on March 16 2023 by selection of area code 738 7 8 The projected in service date is November 1 2024 Service area EditCities and communities in the overlay complex include 3 9 Alhambra mostly served by area code 626 Bell Bell Gardens also served by area code 562 Beverly Hills mostly served by area code 310 City Terrace Commerce small portion in area code 562 Cudahy East Los Angeles Florence Florence Graham Hawthorne mostly served by area code 310 Huntington Park Inglewood mostly served by area code 310 Ladera Heights also served by area code 310 West Hollywood also served by area code 310 Los Angeles Lynwood mostly served by area code 310 Maywood Montebello Monterey Park also served by area code 626 Pasadena mostly served by area code 626 Rosemead mostly served by area code 626 South Gate small portions served by area codes 562 and 310 South Pasadena also served by area code 626 Vernon View Park Windsor Hills Walnut Park West Athens small portion served by area code 310 West Hollywood also served by area code 310 WestmontSee also EditList of California area codes List of North American Numbering Plan area codesReferences Edit Mabbs Ralph Winter 1947 1948 Nation Wide Operator Toll Dialing the Coming Way Bell Telephone Magazine 26 4 181 Retrieved 2023 07 01 NANPA Bellcore Information Letter IL 90 08 055 a b c Prosper Terry 2016 07 14 CPUC Provides For More Phone Numbers in 323 Area Code PDF California Public Utilities Commission website Retrieved 2017 08 24 a b 323 Area Code California Public Utilities Commission website Retrieved August 24 2017 April 2015 NPA Exhaust Projections PDF Nanpa com Application of the North American Numbering Plan Administrator PDF cpuc ca November 24 2015 Retrieved April 11 2023 Area Codes and Numbering California Public Utilities Commission Retrieved 2023 06 28 Planning Letters PDF NANPA 2023 05 16 Retrieved 2023 06 25 323 Area Code Background California Public Utilities Commission website Retrieved August 24 2017 External links EditNANPA area code map of California California Public Utilities Commission s Report on the 213 Area Code 213 Area Code Southern California 323 Area Code Southern California California area codes 209 213 323 279 916 310 424 341 510 408 669 415 628 442 760 530 559 562 619 858 626 650 657 714 661 707 747 818 805 820 831 840 909 925 949 951 North 747 818 626West 310 424 213 323 East 626South 310 424 562 Retrieved from https en wikipedia org w index php title Area codes 213 and 323 amp oldid 1167920547, wikipedia, wiki, book, books, library,

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