Area codes 916 and 279 - Wikipedia
https://en.wikipedia.org/wiki/Area_codes_916_and_279
Originally, the plan area covered the far northern portion of the state. In 1950, as part of a realignment of California's area codes, 916 was rotated to cover the northeastern corner of California, from the Sierra Nevada to the Central Valley. This involved changing Sacramento from area code 415 to 916. The numbering plan area was split in a flash-cut on March 1, 1959, when area code 707 was creat…
DA: 32 PA: 9 MOZ Rank: 98