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Area Code 712
Area code 712 is the telephone area code in the North American Numbering Plan (NANP) for the most western part of Iowa, including the cities of Spencer, Le Mars, Sioux City, Council Bluffs, Red Oak, Sheldon, Storm Lake, Carroll, Sac City, and Shenandoah. Area code 712 was one of the original three area codes for the state of Iowa established in 1947, and is the only one that still has its original boundaries. It is one of the few remaining original area codes (not counting those covering an entire state) that has never been split or overlaid. Despite the proliferation of cell phones and pagers (particularly in Sioux City and Council Bluffs), it is projected to stay that way until at least 2031.https://nationalnanpa.com/reports/October%202021%20NPA%20Exhaust%20Analysis.pdf See also * List of Iowa area codes References External links {{Area code box, State=IA, Width=60%, This=area code 712, N=507, S=660, E= 515, 641, W= 402/531, 531, 605, S1=MN , S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Area Code
A telephone numbering plan is a type of numbering scheme used in telecommunication to assign telephone numbers to subscriber telephones or other telephony endpoints. Telephone numbers are the addresses of participants in a telephone network, reachable by a system of destination code routing. Telephone numbering plans are defined in each of the administrative regions of the public switched telephone network (PSTN) and in private telephone networks. For public numbering systems, geographic location typically plays a role in the sequence of numbers assigned to each telephone subscriber. Many numbering plan administrators subdivide their territory of service into geographic regions designated by a prefix, often called an area code or city code, which is a set of digits forming the most-significant part of the dialing sequence to reach a telephone subscriber. Numbering plans may follow a variety of design strategies which have often arisen from the historical evolution of individual ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Original NANP Area Codes
The original North American area codes were established by the American Telephone & Telegraph Company (AT&T) in 1947, following the demonstration of regional Operator Toll Dialing during the World War II period. The program had the goal of speeding the connecting times for long-distance calling by eliminating intermediary telephone operators. Expanding this technology for national use required a comprehensive and universal, continent-wide telephone numbering plan. The new numbering plan established a uniform Destination routing, destination addressing and call routing system for all telephone networks in North America which had become an essential public service. It had the eventual benefit of direct distance dialing (DDD) by telephone subscribers. The initial ''Nationwide Numbering Plan'' of 1947 established eighty-six numbering plan areas (NPAs) that principally followed existing U.S. state and Canadian provincial boundaries, but fifteen states and provinces were subdivided fur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Area Codes In The United States
The North American Numbering Plan (NANP) divides the territories of its members into 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 that are prefixed to each local telephone number having seven digits. Numbering plan areas may be assigned multiple area codes to provide adequate numbering resources, in which case the local numbering plan is called an overlay. Area codes are also assigned for non-geographic purposes. The rules for numbering NPAs do not permit the digits ''0'' and ''1'' as the leading digit, which also applies for central office codes.AT&T (1955) ''Notes on Distance Dialing'' NPAs with ''9'' as the second digit are reserved for future format expansion. Area codes with two identical trailing digits are considered easily recognizable codes (ERC), which are reserved, or used for systemwide services. Area codes in numerical order 200–299 300–399 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Area Code 605
Image:Area_code_SD.png, The map above is clickable; click on an area code to go to the page for that code. South Dakota's area code in blue with border states shown in yellow, orange and green, 350px, thumb poly 93 2 86 105 1 98 1 1 Area code 406 poly 94 1 365 0 369 28 374 52 90 53 Area code 701 poly 446 121 441 123 437 112 433 111 425 122 426 130 409 130 409 126 412 124 412 112 398 112 396 106 381 102 381 85 368 80 365 73 376 61 368 23 374 23 381 28 386 26 382 22 395 24 396 29 418 22 427 31 432 27 435 13 448 22 Area code 320 poly 361 3 367 22 372 20 383 27 383 25 396 21 396 29 419 21 425 32 437 23 438 16 446 19 445 1 Area code 218 poly 382 104 385 186 447 185 446 123 440 122 438 113 432 115 424 131 408 132 411 125 411 115 398 114 395 103 Area code 507 poly 380 188 382 203 387 206 380 231 388 245 446 244 446 187 Area code 712 poly 385 244 150 244 156 237 165 237 164 231 164 219 304 221 319 229 321 232 327 231 329 228 353 227 367 233 380 234 Area code 402 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Area Code 531
Image:Area_code_NE.png, 370px, Interactive map of Nebraska's numbering plan areas in blue with border states poly 50 20 272 25 291 37 298 32 323 30 340 38 353 50 347 36 354 16 346 7 350 1 47 0 Area code 605 poly 477 147 389 154 383 146 386 131 376 103 374 104 372 95 369 77 359 58 356 49 343 41 354 12 347 7 350 1 477 0 Area code 712 poly 390 155 408 186 416 192 420 191 425 182 418 178 418 175 449 173 449 180 463 185 472 176 480 179 480 147 Area code 660 poly 424 190 428 196 417 211 427 217 479 219 480 178 474 179 466 186 449 183 449 173 418 174 Area code 816 poly 125 190 405 188 415 193 424 192 427 196 418 207 418 214 428 218 125 218 Area code 785 poly 125 137 123 217 0 219 2 129 Area code 970 poly 48 0 43 131 0 127 1 0 Area code 307 poly 49 20 175 25 175 29 161 35 178 40 178 46 161 45 161 49 154 48 153 58 127 58 130 77 193 76 193 61 225 59 225 71 234 75 238 81 248 78 267 72 278 74 274 80 283 94 297 101 303 110 309 113 314 109 320 116 274 143 276 150 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Area Codes 402 And 531
Image:Area_code_NE.png, 370px, Interactive map of Nebraska's numbering plan areas in blue with border states poly 50 20 272 25 291 37 298 32 323 30 340 38 353 50 347 36 354 16 346 7 350 1 47 0 Area code 605 poly 477 147 389 154 383 146 386 131 376 103 374 104 372 95 369 77 359 58 356 49 343 41 354 12 347 7 350 1 477 0 Area code 712 poly 390 155 408 186 416 192 420 191 425 182 418 178 418 175 449 173 449 180 463 185 472 176 480 179 480 147 Area code 660 poly 424 190 428 196 417 211 427 217 479 219 480 178 474 179 466 186 449 183 449 173 418 174 Area code 816 poly 125 190 405 188 415 193 424 192 427 196 418 207 418 214 428 218 125 218 Area code 785 poly 125 137 123 217 0 219 2 129 Area code 970 poly 48 0 43 131 0 127 1 0 Area code 307 poly 49 20 175 25 175 29 161 35 178 40 178 46 161 45 161 49 154 48 153 58 127 58 130 77 193 76 193 61 225 59 225 71 234 75 238 81 248 78 267 72 278 74 274 80 283 94 297 101 303 110 309 113 314 109 320 116 274 143 276 150 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Area Code 641
Area code 641 is a telephone area code for a central portion of Iowa, including Mason City, and Ottumwa. It was split off from area 515 on July 9, 2000; this was the first such split in Iowa since the establishment of the North American Numbering Plan in 1947. Traffic pumping Many calling card and conference service providers operate in area 641. For calls to a rural number in area 641, the long distance provider has to pay the termination fee to the receiving telecom party: up to 8 cents a minute. Using this arbitrage, some of the service providers operate here and require one to dial the "local access number" in area 641. Large telecom providers are the hardest hit with the costs for these so-called free service providers. Around March 2007 AT&T filed a suit to withhold these arbitrage payments (AT&T got a $2 million bill a month). In 2006, various companies began using Iowa's 641 as a number to access voice over IP gateways, including one which purported to allow users ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Area Code 515
Area code 515 is a telephone area code in the North American Numbering Plan (NANP) for most of the north-central part of the U.S. state of Iowa. The numbering plan area includes Des Moines, Ames, Ankeny, Humboldt, Boone, Fort Dodge, Jefferson, Johnston, Urbandale, Algona and Indianola. Despite its relatively low population, Iowa was originally divided into three numbering plan areas (NPAs), with each border line running roughly in north–south directions. Area code 515 originally served the central part of the state, stretching border to border from Minnesota to Missouri. In 2000, the eastern and southern portions of the area were split off with area code 641, leaving 515 with only about one-fourth of its original area, including Des Moines and the area northwest of the city. Only one small portion in the north of the numbering plan area borders another state, Minnesota. The heavy metal music band Slipknot named one of their songs " (515)", because the band is from Des ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Area Code 660
Area code 660 is the telephone area code in the North American Numbering Plan (NANP) for the northern and western part of the U.S. state of Missouri. It was created on October 12, 1997, in an area code split of the 816 numbering plan area (NPA) History When the American Telephone and Telegraph Company (AT&T) created a universal North American telephone numbering plan for Operator Toll Dialing in 1947, Missouri was divided into two numbering plan areas. Area code 816 served points generally north and west of Columbia and Jefferson City, while area code 314 served the eastern third of the state, including St. Louis. In 1951, a third NPA with area code 417 was created for southwestern Missouri. This reduced 816 to the northern third of Missouri, including the Kansas City metropolitan area. By late 1996, the proliferation of cell phones and market reforms related to deregulation by the Telecommunications Act of 1996 required an additional area code for northern Missouri. On April 10 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Area Code 507
Area code 507 is the telephone numbering plan code for the southern fifth of Minnesota, including cities such as Rochester, Mankato, Worthington, Fairmont, Albert Lea, Northfield, and Austin. It was the third area code created for use in the state in 1954, following the original 218 and 612. It was created from the southwestern portion of 218 and the southern portion of 612. In the original 1947 plan, area codes containing "0" (zero) as a middle digit were only assigned to states that were entirely covered by a single area code. Area code 507, along with area code 606 in Kentucky and area code 607 in New York, were the first area codes with a middle digit of "0" to be assigned to states that were covered by more than one area code. The region was directly bordered by 612 (to the north) until that area code was divided in the 1990s. The western half of 507 bordered area code 320 starting in 1996, and then later came to border also area code 651 (1998) and area code 952 (2000) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Iowa Area Codes
The state of Iowa is covered by five area codes. The map to the right is clickable, click on any of the area codes on the map to go to the area code for that region or use the text links below. None of the Iowa codes are expected to need relief in the immediate future. * 319: Cedar Rapids, Waterloo, Iowa City, and Cedar Falls (original area code created in 1947) * 515: Des Moines, Ames, West Des Moines, Urbandale and Fort Dodge (original area code created in 1947) * 563: Davenport, Dubuque, Bettendorf, Clinton, Muscatine (split from 319 in 2001) * 641: Mason City, Marshalltown, Ottumwa, Tama (split from 515 in 1997) * 712: Sioux City, Council Bluffs (original area code created in 1947) See also *State of Iowa {{DEFAULTSORT:List Of Iowa Area Codes Area codes Iowa Iowa () is a state in the Midwestern region of the United States, bordered by the Mississippi River to the east and the Missouri River and Big Sioux River to the west. It is bordered by six ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Overlay Plan
Overlay may refer to: Computers *Overlay network, a computer network which is built on top of another network *Hardware overlay, one type of video overlay that uses memory dedicated to the application *Another term for exec, replacing one process by another *Overlay (programming), a technique to reduce the amount of memory used by a program *Overlay keyboard, a specialized keyboard with no pre-set keys * Keyboard overlay, a sheet of printed text sitting between the keys, depicting an alternate keyboard layout *Vector overlay, an analysis procedure in a geographic information system for integrating multiple data sets Other uses *Overlay architecture, temporary elements that supplement existing buildings and infrastructure for major sporting events or festivals *Overlay control, in semiconductor manufacturing, for monitoring layer-to-layer alignment on multi-layer device structures *Overlay plan, a method of introducing new area codes in telephony *Historic overlay district, a zonin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
