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Area codes are also assigned for non-geographic purposes. The rules for numbering NPAs do not permit the digits 0 and 1 in the leading position. [1] Area codes with two identical trailing digits are easily recognizable codes (ERC). NPAs with 9 in the second position are reserved for future format expansion.
Area codes were assigned based on the volume of traffic and the speed of dialing the code on a rotary electromechanical dial phone, so that the higher the volume of traffic, the less time it took to dial the area code. Area code 212 was the quickest, followed by 213 (Los Angeles) and 312 (Chicago), etc., all the way to 919 (North Carolina).
Area codes 408 and 669 are telephone area codes in the North American Numbering Plan (NANP) in the U.S. state of California. The numbering plan area comprises most of Santa Clara County and Northern Santa Cruz County , and includes Gilroy , Morgan Hill , Saratoga , Los Gatos , Monte Sereno , Milpitas , Sunnyvale , Santa Clara , Cupertino ...
Some geographic area codes are similar to the toll-free codes, e.g., 801, 818, 860. Toll-free numbers are also sometimes confused with 900-numbers, for which the telephone company bills the callers at rates far in excess of long-distance service rates for services such as recorded information or live chat.
707 was the last of California's thirteen area codes with only 0 or 1 in middle position, the others being 310, 510, 818 and 909, all of which, in addition to 619, were introduced decades after 707's debut) to require relief from a "new format" area code (those with 2–8 as their middle digit, which were introduced beginning in 1995 when the ...
Area codes in New York state; area codes 718, 347 and 929 highlighted in bright green. Area codes 718, 347, and 929 are telephone overlay area codes in the North American Numbering Plan (NANP) for the New York City boroughs of the Bronx, Brooklyn, Queens, and Staten Island, as well as the Marble Hill section of Manhattan.
Area codes 850 and 448 are telephone area codes in the North American Numbering Plan for the Florida panhandle, including Pensacola, Tallahassee and Panama City. [1] Area code 850 was created in 1997 in a split from 904, and area code 448 was assigned as a second code to the same area in an overlay plan in 2019; mandatory ten-digit local dialing began in May 2021.
Area codes 541 and 458 are telephone area codes in the North American Numbering Plan (NANP) for most of the U.S. state of Oregon, excluding only the northwestern corner of the state. The service area includes the cities of Eugene , Springfield , Corvallis , Albany , Medford , Bend , Ashland , Klamath Falls , The Dalles , Burns , Lakeview , and ...