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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. 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 ...
Area codes 310 and 424 are telephone area codes in California for the West Los Angeles and South Bay areas of Los Angeles County, a small portion of Ventura County, and Santa Catalina Island. Learn about the history, splits, overlay controversy, and service area of these codes.
Learn about the history and geography of the telephone area codes 408 and 669 in the San Jose area of California. Find out how to dial and what prefixes are used for different cities and communities.
Area codes 916 and 279 serve Sacramento and its suburbs in California. Area code 279 was introduced in 2018 to relieve the exhaustion of 916 numbers.
On March 1, 1959, numbering plan area 415 was divided in a flash-cut (without permissive dialing period) in which the northern part of the numbering plan area (Solano County and north thereof) received area code 707, which was California's eighth area code (along with 213, 415, 916, 714, 408, 805, and 209), and the last new area code in the ...
Learn about the history and service area of the telephone area codes 818 and 747 for the San Fernando Valley region of Los Angeles County, California. Find out which cities and neighborhoods are covered by these codes and how they are used in popular culture.
Area code 951 is a telephone area code for western Riverside County in southern California, created by a split of area code 909 in 2004. It covers cities and communities such as Riverside, Temecula, Murrieta, and Hemet, and will transition to ten-digit dialing in 2021.
Area code 626 is a telephone area code in the North American Numbering Plan for most of the San Gabriel Valley in the U.S. state of California. The numbering plan area also comprises nearby areas in the northeastern portion of Los Angeles County, California , including Arcadia , Monrovia , El Monte , most of Pasadena and West Covina .