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Numbering Plan Area : ウィキペディア英語版
List of North American Numbering Plan area codes

The North American Numbering Plan (NANP) divides the territories of its member countries into Numbering Plan Areas (NPAs), each identified by a three-digit code commonly called area code.
The rules for numbering NPAs do not permit the digits ''0'' and ''1'' as the leading digit of an area code. ''0'' indicates an operator-assisted call, ''1'' (domestic) and ''011'' (international) are trunk prefixes, ''10'' prefixes are part of a feature group to select alternate interexchange carriers on a per-call basis, and ''11'' is a vertical service code prefix. NPAs also cannot currently have ''9'' as a second digit. This is to allow for a future format expansion to 4 digits or more. The expansion scheme would involve inserting a ''9'' as a second digit in all existing NPAs (ex: 450 would become 4950) and telephone switching equipment would recognize the ''9'' as a number being dialed in the new expanded format, otherwise it would be considered dialed as a legacy 3 digit NPA. This would allow a transition period where dialing in both formats would work. After the transition period expired, digits other than ''9'' would be allowed as a second digit. Furthermore, the central office prefix, i.e. the leading three digits of the seven-digit subscriber number, cannot begin with ''0'' and ''1'' either.
==200–299==
200: not used
201: New Jersey (Hackensack, Jersey City, Hoboken, Bayonne, Ridgewood, Ramsey, Union City, Teaneck, New Milford, and most of northeastern New Jersey)
* Originally covered all of New Jersey. Split to create 609 (1958), 908 (1991) and 973 (1997).
* Overlaid by 551 in 2001.
202: Washington, D.C. (all)
203: Connecticut (Bridgeport, Danbury, New Haven, Waterbury, and southwestern Connecticut)
* Originally covered all of Connecticut; was split in 1995 to create 860.
* Overlaid by 475 in December 2009.
204: Manitoba (all).
Overlaid by 431 in November 2012.
205: Alabama (Birmingham; Tuscaloosa, and parts of western and central Alabama)
* Originally covered all of Alabama; split to create 334 (1995) and 256 (1998).
206: State of Washington (Seattle, all of Bainbridge, Mercer, and Vashon islands, Burien, Des Moines, Lake Forest Park, Normandy Park, Sea-Tac, Shoreline, Tukwila, and some small unincorporated areas adjacent to these. Also, parts of Woodway and Edmonds)
* Originally covered all of Washington; split to create 509 (1957), 360 (1995), 425 and 253 (1997).
207: Maine (all except Estcourt Station)
208: Idaho (all)
209: California (Stockton, Modesto, Merced, Tracy, San Andreas, and part of central California extending into central Yosemite National Park)
* Created by a split from 916 in 1958.
* Split in 1998 to create 559.
210: Texas (San Antonio metropolitan area)
* Created by split from 512 in 1992.
* Three-way split in 1997 created 830 and 956.
211: Not an area code. Community services, reserved as a local/regional information number.
212: New York City (Manhattan, except for Marble Hill)
* Split in 1984 to create 718.
* Overlaid by 917 in 1992 and by 646 in 1999.
213: California (Downtown Los Angeles)
* Originally covered the southern third of California; split to create 714 (1951), 805 (1957), 818 (1984), 310 (1991), and 323 (1998).
214: Texas (Dallas–Fort Worth metroplex)
* Split to create 817 (1953), 903 (1990) and 972 (1996). 214 and 972 were merged and overlaid with 469 in 1999.
215: Pennsylvania (Philadelphia area, including all of Philadelphia and its suburbs in eastern Montgomery County and most of Bucks County as well as a very small portion of Berks County around the Hereford area, which is served by the Pennsburg 679 exchange).
* Split to create 610 in 1994.
* Overlaid by 267 in 1997; a further overlay with 445 was proposed, but never implemented.
216: Ohio (Cleveland area)
* Three-way split in 1997 created 330 and 440.
217: Illinois (Springfield, Champaign, Decatur, Urbana, Lincoln, and parts of central Illinois)
* Split in 1957 to create part of 309.
218: Minnesota (Duluth, Moorhead, Thief River Falls, Bemidji, Brainerd, International Falls, and most of northern Minnesota)
* Split in 1954 to create 507.
219: Indiana (Gary, Chesterton, Crown Point, East Chicago, Hammond, Hobart, Merrillville, Michigan City, Portage, Valparaiso)
* Created in 1948 by split from 317.
* Split in 2002 to create 260 and 574.
220: Ohio
* Overlay to Area code 740.
* Activated on April 22, 2015
221–223: not used
224: Illinois (northeastern)
* Overlaid on 847 in 2002.
225: Louisiana (Baton Rouge, Donaldsonville, New Roads, White Castle, and east-central Louisiana)
* Created in 1998 by split from 504.
* Mnemonic: ''CAJun''
226: Ontario (southwestern)
* Overlaid on 519 in 2006.
* Mnemonic: ''CANada''
227 is assigned for numbering relief to 240 and 301 (Maryland), but no date has been scheduled for this to go into effect.
228: Mississippi (Gulfport, Biloxi, Pascagoula, Bay St. Louis, and southmost Mississippi)
* Created in 1997 by split from 601.
229: Georgia (Albany, Valdosta, Bainbridge, Americus, Fitzgerald, and most of southwestern Georgia)
* Created in 2000 by split from 912.
230: not used
231: Michigan (Muskegon, Traverse City, Ludington, Petoskey, and part of northwestern Michigan)
* Created in 1999 by split from 616.
232–233: not used
234: Ohio (northeastern)
* Overlaid on 330 in 2000.
235: not used
236: British Columbia (Vancouver, Fraser Valley)
* Overlaid on 604, 250, and 778 on June 1, 2013.
237–238: not used
239: Florida (southwest coast: all of Lee County, Collier County, the mainland part of Monroe County, including Cape Coral, Fort Myers, Naples, and Everglades)
* Created in 2003 by split from 941.
240: Maryland (southern and western parts)
* Overlaid on 301 in 1997.
241: not used
242: The Bahamas (all)
* Created in 1996 by split from 809.
* Mnemonic: ''BHA''.
243–245: not used
246: Barbados (all)
* Created in 1996 by split from 809.
* Mnemonic: ''BIM''
247: not used
248: Michigan (Oakland County)
* Created in 1997 by split from 810.
* Overlaid by 947 in 2002.
249: Ontario (Northeastern Ontario and Central Ontario: Greater Sudbury, Sault Ste. Marie, North Bay, etc.)
* Overlaid on 705 in 2011.
250: British Columbia (Victoria, Prince George, Prince Rupert, Kelowna, all areas except for Vancouver); also the town of Hyder, Alaska.
* Created in 1996 by split from 604.
* Overlaid by 778 in 2008 (see 604) and by area code 236 on June 1, 2013.
251: Alabama (Mobile County, Baldwin County, Bay Minette, Jackson, Brewton, Citronelle, and part of southwestern Alabama)
* Created in 2001 by split from 334.
252: North Carolina (Greenville, New Bern, Elizabeth City, Kinston, Outer Banks, Rocky Mount)
* Created in 1998 by split from 919.
253: State of Washington (Tacoma, Lakewood, Auburn, Puyallup, Enumclaw, Spanaway, and the southern suburbs of Seattle)
* Created in 1997 by split from 206.
254: Texas (Waco, Killeen, Temple, Belton, and Stephenville)
* Created in 1997 by split from 817.
255: not used
256: Alabama (Huntsville, Decatur, Cullman, Gadsden, Madison, Florence, Sheffield, Tuscumbia, Fort Payne, Scottsboro, and most of northern Alabama)
* Created in 1998 by split from 205.
* Overlaid by 938 in 2010.
257–259: not used
260: Indiana (Fort Wayne, New Haven, Decatur, Angola, Huntington, Wabash, and most of northeastern Indiana)
* Created in 2002 by split from 219.
261: not used
262: Wisconsin (Racine, Kenosha, Menomonee Falls, Waukesha, and most of southeastern Wisconsin excluding Milwaukee County)
* Created in 1999 by split from 414.
263: not used
264: Anguilla (all)
* Created in 1997 by split from 809.
* Mnemonic: ''ANG''
265–266: not used
267: Pennsylvania (Philadelphia and surrounding suburban area)
* Overlaid on 215 in 1997.
268: Antigua and Barbuda (all)
* Created in 1996 by split from 809.
* Mnemonic: ''ANT''
269: Michigan (Battle Creek, Kalamazoo, Benton Harbor, Allegan, Hastings, St. Joseph, and most of southwestern Michigan)
* Created in 2002 by split from 616.
270: Kentucky (Owensboro, Paducah, Bowling Green, Hopkinsville, Henderson, Elizabethtown, and most of western Kentucky)
* Created in 1999 by split from 502.
* Overlaid by 364 on February 1, 2014.
271: not used
272: Pennsylvania (northeastern)
* Overlaid on 570 in 2013
273: not used
274: Wisconsin
* Scheduled to overlay 920 in 2017
275: not used
276: Virginia (Bristol, Abingdon, Wytheville, Martinsville, Bluefield, Big Stone Gap, and the remainder of southwestern Virginia)
* Created in 2001 by split from 540.
277: not used
278: Michigan, was a planned overlay for 734, but it has been suspended indefinitely.
279-280: not used
281: Texas (Houston area)
* Created in 1996 by split from 713; re-merged with 713 as an overlay in 1999.
* Overlaid with 832 in 1999.
* Overlaid with 346 in 2014.
282: not used
283: Proposed overlay of 513 (southwest Ohio), but no date has been scheduled for this to go into effect. (Ten thousands blocks have been assigned to a switch in Cincinnati, Ohio.)〔NECA Tariff 4 filing, May 9, 2012.〕
284: the British Virgin Islands (all)
* Created in 1997 by split from 809.
* Mnemonic: ''BVI''
285–288: not used
289: Ontario (Oshawa-Hamilton and Golden Horseshoe, excluding Toronto 416 but including its adjacent suburbs)
* Overlaid on 905 in 2001.
290–299: Reserved for potential North American Numbering Plan expansion

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「List of North American Numbering Plan area codes」の詳細全文を読む



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