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  2. List of California area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_California_area_codes

    Numbering plan areas in California (blue) and border states. This map is clickable; click on any region shown to visit the page for those area codes. In 1947, the American Telephone and Telegraph Company (AT&T) devised the first nationwide telephone numbering plan and assigned the original North American area codes.

  3. Area codes 408 and 669 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_408_and_669

    Until the late 1970s, central office code protection was maintained between area codes 415 and 408, so that Telephone numbers were not duplicated across, and subscribers could dial seven-digit San Francisco or Berkeley numbers without dialing an area code. Population growth, facsimile machines, and pagers caused demands for numbers to outrun ...

  4. Cooking school - Wikipedia

    en.wikipedia.org/wiki/Cooking_school

    Culinary education in the United States is a fairly new concept in relation to culinary education in Europe. Charles Ranhoffer, chef of the early fine dining restaurant Delmonico's, published a national magazine named "Chef" in 1898 which included one of the first calls to establish a training school for cooks in the United States. Until this ...

  5. Area codes 909 and 840 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_909_and_840

    Area code 909 was created on November 14, 1992, in an area code split of 909, and 840 was added to the numbering plan area to form an overlay complex effective February 23, 2021. While most of western Riverside County now uses Area code 951 , some residents in Eastvale and Corona were allowed to keep the 909 area code after the split in 2004.

  6. Area codes 714 and 657 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_714_and_657

    Area codes 714 and 657 are telephone area codes in the North American Numbering Plan for the southern part of the U.S. state of California. The numbering plan area comprises northern Orange County , a portion of Los Angeles County , and the Sleepy Hollow and Carbon Canyon areas of Chino Hills in San Bernardino County .

  7. Area codes 805 and 820 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_805_and_820

    Area codes 805 and 820 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of California. The numbering plan area (NPA) includes most or all of the counties of San Luis Obispo, Santa Barbara, Ventura, and the southernmost portions of Monterey County. 805 was split from area code 213 in 1957, and area code 820 ...

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