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The state of California was divided into three numbering plan areas (NPAs) with distinct area codes: 213, 415, and 916, for the southern, central, and northern parts of the state, respectively. As of July 2023, California has 38 active area codes.
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This is a list of North American telephone area codes in effect for the North American Numbering Plan (NANP). The area to which an area code is officially assigned is known as a Numbering Plan Area (NPA). An area code is part of a telephone number in the United States, Canada, and the Caribbean.
California is the state with the most area codes at 37 followed by Texas (28), Florida (20), New York (20), and Illinois (15). 11 US states only have a single area code. While no area codes in the US cross state boundaries, 3 area codes in Canada cross province boundaries.
Our area code lookup makes it easy to find area codes in California. Includes area code listings of all California area codes with corresponding cities.
2 days ago · Cambridge. Newton. Somerville. Everett. Watertown. Belmont. Norfolk County. Quincy. Brookline. Milton. Find out where 857 area code zone from, which states, counties and cities it covers. Get the most exact information on time zones here.
This area code was assigned on May 3rd, 2000. On May 2nd, 2001 it went into service. 857 is a General Purpose Code. 857 service area does overlap with 617 area codes. Dialing pattern for local calls within the same NPA (area code) is 10D.
