Area code 831is a telephonearea codein theNorth American Numbering Planfor a small region of theU.S. stateofCalifornia.Thenumbering plan area(NPA) comprisesMonterey County,San Benito County,andSanta Cruz County.The area code was created in 1998 in anarea code splitofarea code 408.
History
editIn 1947, theAmerican Telephone and Telegraph Company(AT&T) devised the first nationwidetelephone numbering planand assigned theoriginal North American area codes.The state of California was divided into three numbering plan areas (NPAs) with distinct area codes:213,415,and916,for the southern, central, and northern parts of the state, respectively.[1]California area codes were reorganized geographically in 1950, so that 916 was assigned to a numbering plan area that comprised only the northeastern part from theSierra Nevadato theCentral Valley.The coastal area to the west was assignedarea code 415.[2]
Area code 408 was split from numbering plan area 415 on March 1, 1959. The new numbering plan area included most ofSanta Clara,Santa Cruz,MontereyandSan BenitoCounties.
In 1997, the California/Nevada Code Administrator (C/NCA) advised theNorth American Numbering Plan Administration(NANPA) of the need for area code relief in the 408 numbering plan area. A geographicarea code splithad been approved by the California Public Utilities Commission (CPUC) which would install area code 831 for a new numbering plan area comprising the communities of Santa Cruz, Salinas, Monterey, and Hollister. Area code 408 would be retained in Sunnyvale, San Jose, Los Gatos, and Gilroy. The area code split became effictive on July 11, 1998, with a permissive dialing period ending on February 20, 1999.[3]
Due to the relatively small size of the area (in both area and population), exhaustion of 831 is unlikely for the foreseeable future.[4]
Service area
editThe service area of NPA 831 includesBig Sur,Monterey Bay,theSalinas Valley,and the southwesternSanta Cruz Mountains.
Major cities in the area areSalinas,Hollister,Monterey,Santa Cruzand places in the northernCentral Coast.[5]
Monterey County
edit- Aromas
- Big Sur
- Boronda
- Carmel Highlands
- Carmel Valley Village
- Carmel-by-the-Sea
- Castroville
- Chualar
- Del Monte Forest
- Del Rey Oaks
- Elkhorn
- Gonzales
- Gorda
- Greenfield
- Jolon
- King City
- Las Lomas
- Lockwood
- Marina
- Monterey
- Moss Landing
- Pacific Grove
- Pajaro
- Pebble Beach
- Prunedale
- Salinas
- San Ardo
- San Lucas
- Sand City
- Seaside
- Soledad
- Spreckels
San Benito County
editSanta Cruz County
editSee also
editReferences
edit- ^Mabbs, Ralph (Winter 1947–1948)."Nation-Wide Operator Toll Dialing—the Coming Way".Bell Telephone Magazine.26(4): 181.Retrieved2023-07-01.
- ^W. H. Nunn,Nation-wide Numbering Plan,AIEE 1952-09 p.884
- ^"Planning Letter 63: NANP-Split of 408 (California) Numbering Plan Area (NPA)"(PDF).NANPA. 1997-05-22.Retrieved2023-09-17.
- ^"2023-2 NRUF and NPA Exhaust Analysis"(PDF).NANPA. October 2023.Retrieved2024-09-28.
- ^"831 Area Code | Free Area Code Search".2009-04-04. Archived fromthe originalon 2009-04-04.Retrieved2019-06-15.
External links
edit- "Area Code Maps".NANPA.
| North:408/669,650 | ||
| West:Pacific Ocean,808 | 831 | East:209/350,559 |
| South:805/820 | ||
| Hawaiiarea codes:808 | ||