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  2. Area code 925 - Wikipedia

    en.wikipedia.org/wiki/Area_code_925

    Area code 925 is a telephone area code in the North American Numbering Plan for a northern part of the U.S. state of California. It was created in an area code split of area code 510 in 1998. The numbering plan area comprises the inland portions of the East Bay counties of Alameda and Contra Costa .

  3. Contra Costa County, California - Wikipedia

    en.wikipedia.org/wiki/Contra_Costa_County...

    Time zone: UTC−8 (Pacific Time Zone) • Summer : UTC−7 (Pacific Daylight Time) Area code: 510, 341, 925: FIPS code: 06-013: GNIS feature ID: 1675903 ...

  4. Brentwood, California - Wikipedia

    en.wikipedia.org/wiki/Brentwood,_California

    Time zone: UTC-8 • Summer : UTC-7 : ZIP code: 94513. Area code: 925: FIPS code: 06-08142: GNIS feature IDs: 277479, ... As time went on, Mission San Jose converted ...

  5. Area codes 510 and 341 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_510_and_341

    Area code 510 was established on September 2, 1991, in a split from area code 415. [1] On March 14, 1998, the inland portion of the East Bay was split off as area code 925. The dividing line followed the Berkeley Hills; almost everything west of the hills stayed in 510, while everything east of the hills transferred to 925.

  6. List of California area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_California_area_codes

    Area code Service area Notes 209: Stockton, Modesto, Merced, Turlock; the northern San Joaquin Valley and the central Sierra Nevada range. Split from 415 on October 26, 1957; split off 559 on November 14, 1998; overlaid with 350 on November 28, 2022 213: Much of the City of Los Angeles and several inner suburbs

  7. List of North American Numbering Plan area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_North_American...

    The 469th area code in the NANPA; 925: California (inland regions of the East Bay: Livermore, Concord, Pleasant Hill, Walnut Creek, Martinez, Pleasanton, and Dublin, just east of the hills that ring San Francisco Bay) March 14, 1998: split of 510; 926: not in use; available for geographic assignment 927: not in use; available for geographic ...

  8. Camino Tassajara, California - Wikipedia

    en.wikipedia.org/wiki/Camino_Tassajara,_California

    Time zone: UTC-8 (Pacific (PST)) • Summer : UTC-7 (PDT) ZIP code: 94506 [3] Area code: 925: FIPS code: 06-10301: GNIS feature IDs: 2583160, 2633171:

  9. Byron, California - Wikipedia

    en.wikipedia.org/wiki/Byron,_California

    Time zone: UTC-8 • Summer : UTC-7 : ZIP code: 94514. Area code: 925: FIPS code: 06-09346: GNIS ... offices which occupy about one-third of the area. Its objective ...