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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.
Area codes 209 and 350; Area codes 213, 323, and 738; Area codes 310 and 424; Area codes 408 and 669; Area codes 415 and 628; Area codes 510 and 341; Area code 530; Area code 559; Area code 562; Area codes 619 and 858; Area code 626; Area code 650; Area codes 714 and 657; Area code 661; Area codes 707 and 369; Area codes 818 and 747; Area codes ...
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.
Euclidean zoning codes with strict use separation are by far the most prevalent type in the United States. [2] [89]: 38 While the use of innovations such as form-based, performance, planned-unit development, and mixed-use zoning are common in the US, they tend to liberate relatively little land area from strict single-use zoning.
Zoning map of Winnipeg (1947); single-family zoning highlighted in yellow. Single-family zoning is a type of planning restriction applied to certain residential zones in the United States and Canada in order to restrict development to only allow single-family detached homes.
Orange County Area. Santa Ana-Anaheim-Irvine, CA. Santa Ana; South Coast Metro; Santa Ana Valley; Saddleback Valley; Santa Ana Mountains; San Diego–Tijuana. San Diego metropolitan area. North County. North County Coastal; North County Inland; Temecula Valley; East County. Mountain Empire; South Bay
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.Area codes 408 and 669 are shown in red. Area codes 408 and 669 are telephone area codes in the North American Numbering Plan (NANP) in the U.S. state of California.
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