Area codes 618 and 730 are telephone area codes in the North American Numbering Plan (NANP) for southern Illinois. The numbering plan area (NPA) comprises...

Area codes 314 and 557 are telephone area codes in the North American Numbering Plan (NANP) in the U.S. state of Missouri, serving the city of St. Louis...

geographic numbering plan areas (NPAs). Each NPA is identified by one or more numbering plan area codes (NPA codes, or area codes), consisting of three digits...

including Moline, and Rock Island. 312: Chicago, the central city area including the Chicago Loop and the Near North Side. 618/730: Southern Illinois...

within the same area, the area code is not required. In general, shorter area codes are assigned to larger cities, and longer area codes to smaller towns...

Area codes 905, 289, 365, and 742 are telephone area codes in the North American Numbering Plan (NANP) for the Golden Horseshoe region that surrounds Lake...

Area codes 217 and 447 are telephone area codes in the North American Numbering Plan (NANP) for much of the central part of the U.S. state of Illinois...

list of future area codes in the North American Numbering Plan (NANP) that are in the planning stages for relief of central office code exhaustion in the...

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...

Area codes 208 and 986 are telephone area codes in the North American Numbering Plan for all of Idaho. Area code 208 is one of the 86 original area codes...

area code is one of the nine original North American area codes assigned to Canada in 1947. The numbering plan area is also served by area codes 236,...

Area codes 519, 226, 548, and 382 are overlay telephone area codes in the North American Numbering Plan (NANP) for most of southwestern Ontario. Area...

Area codes 617 and 857 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of Massachusetts, serving the city of Boston...

Area codes 309 and 861 are telephone area codes in the North American Numbering Plan (NANP) for the west-central part of the U.S. state of Illinois. The...

area codes in 1947. The numbering plan area retains its original boundaries, having never been split or overlaid. As of April 2020[update], area code...

Area codes 418, 581, and 367 are telephone area codes in the North American Numbering Plan (NANP) for the eastern portion of the Canadian province of...

numbering plan area (NPA) for the entire state with one of the original area codes in October 1947 and it remains Vermont's only area code. Vermont is among...

Area codes 847 and 224 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of Illinois. The numbering plan area (NPA)...

Area codes 708 and 464 are telephone area codes in the North American Numbering Plan (NANP) for the southern and western suburbs of Chicago in the U.S...

Area codes 705, 249, and 683 are telephone area codes in the North American Numbering Plan (NANP) for most of northeastern and central Ontario in Canada...

Area codes 815 and 779 are telephone area codes in the North American Numbering Plan (NANP) for most of northern Illinois outside the Quad Cities areas...

Area codes 819, 873, and 468 are overlay telephone area codes in the North American Numbering Plan (NANP) for central and western Quebec, Canada, including...

overlays were a new concept at the time, and met with some resistance to the mixing of area codes in the same area and the ensuing requirement for ten-digit...

Area codes 630 and 331 are telephone area codes in the North American Numbering Plan (NANP) for portions of Chicago's near and far western suburbs, including...

Area codes 613, 343, and 753 are telephone area codes in the North American Numbering Plan (NANP) for Ottawa and surrounding Eastern Ontario, Canada. Area...

not need a new area code until 2029. About 730 of the nearly 800 possible central office codes have been assigned. Being the sole area code in North Dakota...

Area codes 304 and 681 are telephone area codes in the North American Numbering Plan (NANP) for the entirety of the U.S. state of West Virginia. The numbering...

2021. "Area Code 603". www.area-codes.com. Retrieved 2022-05-12. "Area Code Maps". NANPA. List of exchanges from AreaCodeDownload.com, 603 Area Code December...

Waukon, West Union, Wilton, Worthington, Wadena List of Iowa area codes "Area Code Maps". NANPA. List of exchanges from AreaCodeDownload.com, 563 Area Code...

Area codes 450, 579, and 354 are telephone area codes in the North American Numbering Plan in the Canadian province of Quebec, encompassing the off-island...