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Topic: Numbering plan area

	Telephone area code
		The area code is a part of a telephone number normally occurring at the beginning that usually indicates a geographical area.
		In the United States and Canada, area codes are regulated by the North American Numbering Plan.
		In the United Kingdom, area codes are -- excluding the leading '0' -- two, three or four digits long, with larger towns and cities having shorter area codes permitting a larger number of telephone numbers in the ten digits used.
	www.ebroadcast.com.au /lookup/encyclopedia/te/Telephone_area_code.html (392 words)

	Define AC - Area Code
		Meaning of AC — “Area Code”, a telephone numbering plan consisting of three digits that are assigned to geographical areas in North America and used before a seven digit telephone number for placing a call to that area.
		In early area codes, the first number had to be any digit from 2-9 and the second number was restricted to a 0 or a 1 and the third could be any digit from 0-9.
		When the number of available area codes was running short in the early 1990's, the restriction on the second number was changed to allow any digit from 0-9.
	www.birds-eye.net /definition/a/ac-area_code.shtml (880 words)

	NPA - Network Printer Alliance, Numbering Plan Address
		Area codes are typically three digits long, and some area code values are reserved and assigned for special services.
		Historically, the area codes followed a "N-1/0-X" format where the middle number was either a one or a zero.
		Numbering Plan Area - The area served by the North American Numbering Plan is divided into smaller areas, each identified by a three-digit NPA code, commonly called an area code.
	www.auditmypc.com /acronym/NPA.asp (427 words)

	Area Codes: Frequently Asked Questions and Fact Sheet
		Area code changes are inconvenient for both residential and business customers, so it is important to make the numbers in each area code last as long as possible.
		In addition, over 40 area codes are in service in the other countries that participate in the North American Numbering Plan, including Canada and a number of Caribbean nations.
		The area code tells the network the geographic area in which the called party lives, and the exchange indicates the particular switch, within that area code, to which the call should be routed.
	www.fcc.gov /Bureaus/Common_Carrier/Factsheets/areacode.html (1527 words)

	North American Numbering Plan - Wikipedia, the free encyclopedia
		Area codes, or "number planning areas" ending in double digits, such as toll-free 800, 888, 877, and 866, personal 700 numbers, and high-toll 900 numbers, are reserved as Easily-recognizable codes (ERCs) and are not issued to actual areas.
		The integrated numbering plan also enables local number portability between fixed and wireless services within a region, allowing users to switch to mobile service while keeping their phone number, which is not a common option in caller-pays systems.
		The plans being considered now add a 1 or 0 to the beginning or end of the area code or the beginning of the local 7-digit number (or both), which will require mandatory 10-digit dialing (even for local calls) be in place everywhere, well before the transition period.
	en.wikipedia.org /wiki/North_American_Numbering_Plan (4103 words)

	Expanding the North American Numbering Plan
		Unlike the UK plan, number length remains deterministic; the originating switch can determine the total number of digits to be dialed by analyzing the first few digits.
		Old area codes and numbers are still reachable using transitional n9xx+7 digit dialing, both with and without the leading 1, but the n9xx+7 format is on notice for discontinuance.
		As a further restriction on the numbering plan, if 3-digit prefix codes are converted to 4-digit format by inserting a "5" in the second position, prefix codes 900-909 become ambiguous; old prefix conversions should thus avoid the use of 5 unless all 90x prefix codes can be removed from that area.
	www.ionary.com /ExpandingNANP.htm (2529 words)

	[No title]
		On February 23, 1999, the NANPA announced that the 716 area code was in jeopardy of exhaust and established code conservation measures that were to be in effect during the development of a relief plan.
		Finally, we consider, in deference to the states and their delegated authority to implement area code relief, additional factors such as states' unique knowledge of local conditions and the importance of maintaining geographic and community identity, which are important factors in determining the appropriate relief plan.
		It is estimated that the area code relief plan proposed by the NYDPS would result in the splitting of 14 rate centers, and the duplication of 29 CO codes.
	www.fcc.gov /Bureaus/Common_Carrier/Orders/2001/da010651.txt (1908 words)

	704 Area Code To Overlay
		This relief plan was rejected because of the potential for customer confusion about the proper dialing patterns as the overlay is phased in and the difficulty of accurately predicting individual growth patterns of the two parts of the 704 geographic area.
		The industry rejected all geographic split relief plans because of the necessity of changing the telephone numbers of a large number of subscribers, the difficulty of predicting growth for the two areas, and potential customer confusion as the area is divided into smaller pieces.
		Existing telephone subscribers would not have to change area codes or their telephone numbers, but when telephone numbers in the 704 area code run out, new residential and business telephone numbers for the area would be assigned from the new area code.
	www.areacode-info.com /headline/1999/nc990215.htm (3158 words)

	ipedia.com: North American Numbering Plan Article (Site not responding. Last check: 2007-10-19)
		Area codes, or "number planning areas" ending in double digits, such as toll-free 800, 888, 877, and 866, personal 700 numbers, and high-toll 900 numbers, are reserved as "easily recognizable codes" (ERCs) and are not issued to actual areas.
		This however is generally not a problem in major metropolitan areas with overlapping area codes, which were mandated to dial all ten digits for all locals calls by the FCC so as not to give new numbers a "disadvantage".
		The plans being considered now add a 1 or 0 to the end of the area code or the beginning of the local 7-digit number (or both), which will require mandatory 10-digit dialing (even for local calls) be in place everywhere, well before the transition period.
	www.ipedia.com /north_american_numbering_plan.html (1450 words)

	Area Code Frequently Asked Questions
		The North American Numbering Plan (NANP) is the numbering plan used for the Public Switched Telephone Network in the United States and other territories.
		The NANP numbers are ten digits in length, and in the format NXX-NXX-XXXX.
		New area codes are introduced when numbers in an existing area code will be exhausted.
	www.allareacodes.com /area_code_faqs.htm (333 words)

	Telecom Decision CRTC 2004-61
		The Commission notes that the exhaust dates for various area codes in Canada were deferred during a downturn in the telecommunications industry, but that since 2003, CO code forecasts have shown some increased demand for telephone numbers.
		The Commission further notes that area code 250 in British Columbia (B.C.) and area code 403 in Alberta are currently in the seven-year relief planning window, and that area codes 780 in Alberta, 778 in B.C., and 416 and 647 in Ontario are projected to exhaust within the decade.
		Given the number of area codes expected to exhaust in the next decade, the Commission considers that there may be continued uncertainty regarding when or if 10-digit local dialing will be introduced in individual Canadian area codes.
	www.crtc.gc.ca /archive/ENG/Decisions/2004/dt2004-61.htm (2982 words)

	602area (Site not responding. Last check: 2007-10-19)
		In addition to commenting on the NPA Administrator's Recommendation, the Commission Staff requests parties to also discuss the various forms of number "pooling" now under active consideration at both the state and federal levels and the impact of these various forms of number pooling on the need for relief in the 602 area code.
		On April 28, 1997, the US WEST Numbering Plan Administration Center as the Central Office Code Administrator in Arizona filed an Industry Report stating that service providers in the State were unable to reach consensus on an area code relief plan for the 602 Numbering Plan Area (NPA) code.
		The "grandfathering" of these wireless numbers would eliminate the need for customers to have their telephone sets programmed by their service providers as would be required if they changed area codes.
	www.cc.state.az.us /working/602area.htm (2314 words)

	MOREnet Dialing Plan \| Research and Innovation \| Technical Support \| MOREnet
		The assigned numbers then need to be routed to a suitable gateway device, such as an MCU, codec or voice bridge to actually terminate the call, or to a voice recording to tell callers that the number dialed is a video number and give contact information for further assistance.
		Plans to extend the NANP from 10 to 12 digits (by adding 1 digit to the NPA and 1 digit to the NNX) have been presented (see the ATIS web site at http://www.atis.org/atis/clc/INC/Incdocs.htm for document INC 02-0107-029, "Industry Numbering Committee (INC) Recommended Plan for Expanding the Capacity of the North American Numbering Plan", December 2001).
		E.164 is the international standard for telephone numbers, administered by the International Telecommunications Union (www.itu.int) globally and the North American Numbering Plan Administrator (www.nanpa.com) in the USA.
	www.more.net /technical/research/dialplan (5339 words)

	DEPUTY ATTORNEY GENERAL
		Area codes would be associated with specific areas and customers in the new area code would keep their 7-digit number but be assigned the new area code.
		Because number reclamation may postpone the exhaust of the 208 area code, the Commission and its Staff gave notice to the Administrator on October 4, 2001 that it seeks to assume reclamation authority.
		To avoid this result and delay exhaust of the 208 NPA, the Commission petitioned the FCC on November 6, 2001 requesting that the Boise MSA be moved ahead to the Second Quarter in its proposed thousand-block pooling rollout schedule.
	www.puc.state.id.us /TELECOM/28902.htm (6277 words)

	LincMad: FCC Numbering Regulations
		Such functions may include: declaring that the area code relief planning process should begin; convening and conducting meetings to which the telecommunications industry and the public are invited on area code relief for a particular area code; and developing the details of a proposed area code relief plan or plans.
		An area code boundary realignment, which occurs when the boundary lines between two adjacent area codes are shifted to allow the transfer of some central office codes from an area code for which central office codes remain unassigned to an area code for which few or no central office codes are left for assignment; or
		No area code overlay may be implemented unless all central office codes in the new overlay area code are assigned to those entities requesting assignment on a first-come, first-serve basis, regardless of the identity of, technology used by, or type of service provided by that entity.
	www.lincmad.com /fcc-regs.html (1627 words)

	Interim
		Under Part 1 Section 3 (1) of the Telecommunications Numbering Regulations 2004, “The National Numbering Plan to be issued by the Minister identifies the framework for allocation of ordinary numbering blocks, exchange codes, short codes, and other unique numbering resources to different classes of Resource Users and applications”.
		Resource allocation or numbering is no longer a viewed as a purely technical matter but increasingly as an issue which must address important commercial, political, and economic considerations for telecommunications operators, regulators and policy makers.
		To assign a numbering resource is to reflect the allocation by actually assigning a specific block(s) of the resource to service providers to use for the stated purpose (allocation).
	www.gov.ai /Nationa_Numbering_Plan.htm (629 words)

	LincMad: All About Area Codes
		Over the years, several area codes were split or realigned to ensure that each region had adequate numbering capacity for its needs.
		In the early 1970s, a plan was formulated to deal with this increasing demand: in the first stage, local numbers would be permitted to have the second digit be a 0 or a 1, first in areas of very high demand such as Los Angeles and New York City, and later in other metropolitan areas.
		All area codes with 9 as the middle digit are reserved for this future expansion, although there are proposals (including mine), that would allow for the immediate use of the N9X codes while still providing an orderly transition to longer-than-10-digit numbers.
	www.lincmad.com /overview.html (432 words)

	World Telephone Numbering Guide
		The North American Numbering Plan +1 is an example, because there are always ten digits associated with each national number - 3 digits of area code followed by 7 digits of subscriber number.
		In the North American Numbering Plan +1 it is 1; it is merely co-incidental that the country code and trunk prefix are both 1.
		Non-geographic area codes would include wireless (cellular and pager whose subscribers could be located at variable points), or toll-free services (usually assignable on a nation-wide basis, without being bound to specific regions), or premium and personal number services (again, assignable anywhere within a nation).
	www.wtng.info /wtng-glo.html (1032 words)

	[No title]
		“82" for Aba numbering Area “1" for Lagos Numbering Area The prefix “0” is not part of this code v) Directory Number: It is the subscriber’s telephone number, which is to be dialed to reach a subscriber in the same Numbering Area.
		The International number consists of the country code of the required country followed by the National number of the called subscriber, but does not include the Trunk prefix used in the national network of the called subscriber x) Exchange Code: It is the first one, two or three digits of the subscribers Telephone number (i.e.
		Subscriber Number The subscriber number is that part of the National (significant) Number which follows the Area code.
	www.ncc.gov.ng /NNP/national_numbering_plan.doc (1110 words)

	Puslifer Comment Dec. Authorizing North American Numbering Plan with carriers providing service in the 310 area code
		The 424 area code may be dialed on a permissive basis beginning on September 5, 2003, and must be dialed on a mandatory basis for calls into the new area code beginning on December 22, 2003.
		In order to ensure that callers hear the special recorded message whenever they dial the 310 area code for numbers assigned to the 424 area code, no new numbers may be assigned to customers in the 424 area code during the mandatory dialing phase of implementation.
		The supply of available telephone numbers is governed nationally by the North American Numbering Plan which prescribes the structure of telephone numbering codes.
	www.cpuc.ca.gov /PUBLISHED/COMMENT_DECISION/25897.htm (995 words)

	NANPA : Number Resources - NPA (Area) Codes
		The area served by the NANP is divided into smaller Numbering Plan Areas (NPAs), each identified by a three-digit NPA code, commonly called an area code.
		In addition, there is a report that identifies those planned area codes not yet in service.
		NANPA uses NPA Allocation Plan and Assignment Guidelines prepared by the ATIS-sponsored Industry Numbering Committee to administer area codes.
	www.nanpa.com /area_codes (386 words)

	National Frequency Management Unit - Guyana
		Administration of the national public telecommunications numbering system is done in accordance with the National Numbering Plan Guidelines.
		The format for the national numbering plan is NXX XXXX, where N is any integer 2-9 and X is any integer 0-9.
		Since the number resources, as structured, is finite, it must be utilized in the most efficient way.
	www.sdnp.org.gy /nfmu/numbering.htm (152 words)

	RXN Communications FAQ - NPA
		A unique feature of this area code split is that customers with individual telephone numbers in certain prefixes will either remain in the 612 NPA or transfer to the new 651 NPA depending on which city/town in which they are located.
		A unique feature of this area code split is that customers with individual telephone numbers in certain prefixes will either remain in the 612 NPA or transfer to the new 952 or 763 NPA depending on the city/town in which they are located.
		Also during this time, callers outside of the local calling area who are dialing numbers which will move to the 952 or 763 NPA's can use either 612 or their new NPA of either 952 or 763.
	www.rxn.com /services/faq/npa (2404 words)

	List of country calling codes - Encyclopedia, History, Geography and Biography
		Zone 1 – North American Numbering Plan Area
		Areas within NANPA (North American Numbering Plan Area) have been assigned area codes as if they were all areas within one country.The codes below in format +1-XXX represent that area code within the +1 NANPA--Not a separate country code.
		For example, the country code for Guam is +1 followed by the area code 671--not +671.
	www.arikah.net /encyclopedia/List_of_country_calling_codes (693 words)

	AT&T - Help - Area Code Glossary
		Geographic Split — The exhausting area code is split into two or more geographic areas, leaving the existing area code to serve one side of the geographic area and assigning new area codes to the remaining areas.
		INC — Industry Numbering Committee, a standing committee of the Industry Carriers Compatibility Forum (ICCF) that provides an open forum to address and resolve industry-wide issues associated with the planning, administrations, allocation, assignment, and use of numbering resources and related dialing considerations for public telecommunications with the North American Numbering Plan (NANP) area.
		Number Pooling — A process that allow the same databases that make number portability possible to apportion telephone numbers to local telephone companies in smaller blocks, such as blocks of 1,000.
	www.att.com /gen/general?pid=1495 (559 words)

	The PDA Initiative - Area Code Wizard (Site not responding. Last check: 2007-10-19)
		An NPA (Numbering Plan Area) lookup displays the state in which the NPA exists.
		In dense telecommunication areas, the cities are also displayed.
		When an NPA is selected, it's information is displayed in an easy-to-read format.
	www.pdainitiative.com /products/acw (156 words)

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