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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.
Toll-free telephone numbers in the North American Numbering Plan have the area code prefix 800, 833, 844, 855, 866, 877, and 888. Additionally, area codes 822, 880 through 887, and 889 are reserved for toll-free use in the future. 811 is excluded because it is a special dialing code in the group NXX for various other purposes.
Area code 603 in a 1956 map, covering the whole state.. Area code 603 is the sole area code for the U.S. state of New Hampshire in the North American Numbering Plan (NANP). It was created as one of the original 86 numbering plan areas in October 1947.
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 the Sierra Nevada to the Central Valley. The coastal area to the west was assigned area code 415. [2] Area code 408 was split from numbering plan area 415 on March 1, 1959.
Federal Entity Area codes Aguascalientes 449, 458, 465, 495, 496 Baja California 616, 646, 653, 658, 661, 663, 664, 665, 686 Baja California Sur
Until August 3, 2019, telephone numbers in Mexico consisted of ten digits with either two-digit area codes (for Mexico City, Monterrey, and Guadalajara and their respective metropolitan areas) or three-digit area codes for the rest of the country.
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833–834: Iranian calendar: 1211–1212: Islamic calendar: 1248–1249: Japanese calendar: Tenpō 4 (天保4年) Javanese calendar: 1760–1761: Julian calendar: Gregorian minus 12 days: Korean calendar: 4166: Minguo calendar: 79 before ROC 民前79年: Nanakshahi calendar: 365: Thai solar calendar: 2375–2376: Tibetan calendar: 阳水龙年 ...