A telephone numbering plan is a system that allows subscribers to make and receive telephone calls across long distances. The area code is that part of the telephone number that specifies a telephone exchange system. Telephone numbering plans assign area codes to exchanges, so that dialers may contact telephones outside their local system. Normally occurring at the beginning of the number, area codes usually indicate geographical areas. Together, numbering plans and their component area codes direct telephone calls to particular regions on a public switched telephone network (PSTN), where they are further routed by the local network.
Callers within the geographical area of a given area code usually do not need to include this particular area code in the number dialed, thereby giving the caller shorter local telephone numbers. In international phone numbers, the area code directly follows the country calling code. Phone Area Code Search - Free area code search for time, zip and area code including area code maps.
Although the International Telecommunication Union (ITU) has attempted to promote common standards among nation states, numbering plans take different formats in different parts of the world. For example, the ITU recommends that member states adopt 00 as their international access code. However, as these recommendations are not binding on member states, some have not, such as the United States, Canada, and other countries and territories participating in the North American Numbering Plan.
The international numbering plan establishes country codes, that is, area codes that denote nations or groups of nations. The E. 164 standard regulates country codes at the international level and sets a maximum length limit on a full international phone number. However, it is each country's responsibility to define the numbering within its own network. Fix split area codes in your phone
lists with our Area Code Wizard! To learn more about what AmeriCom can do. As a result, regional area codes may have:
Generally the area codes determine the cost of a call. Calls within an area code and often a small group of adjacent or overlapping area codes are normally charged at a lower rate than outside the area. Special area codes are generally used for free, premium rate, mobile phone systems (in countries where the mobile phone system is caller pays) and other special rate numbers. There are however some exceptions, in some countries (e. g. and international area codes by number to find what major cities the area code contains. Israel), calls are charged at the same rate regardless of area and in others (e. g. the UK) an area code is occasionally treated as two parts with different rates.
An open dialing plan is one in which there are different dialing arrangements for local and long distance telephone calls. This means that to call another number within the same city or area, callers need only dial the number, but for calls outside the area, an area code is required. The area code is prefixed by a trunk code (usually "0"), which is omitted when calling from outside the country. To call a number in Amsterdam in the Netherlands for example:
xxx xxxx (within Amsterdam- no area code required)(020) xxx xxxx (outside Amsterdam) +31 20 xxx xxxx (outside the Netherlands)In the United States, Canada, and other countries or territories using the North American Numbering Plan (NANP), the trunk code is '1', which is also (by coincidence) the country calling code. provides you with current information related to area codes , city codes , and country codes. To call a number in San Francisco, the dialing procedure will vary:
xxx xxxx (local calls, no area code required)1 415 xxx xxxx (outside San Francisco)415 xxx xxxx (mobile phones within NANP)+1 415 xxx xxxx (outside NANP)However, in parts of North America, especially where a new area code overlays an older area code, dialing 1 + area code is now required even for local calls, which means that the NANP is now closed in certain areas and open in others. Dialing from mobile phones is different in that the trunk code is not necessary. (Most mobile phones today can be programmed to automatically prepend a frequently-called area code as a prefix, allowing calls within the desired area to be dialed by the user as seven-digit numbers, though sent by the phone as 10-digit numbers. )
Open and closed dialing plan should not be confused with open and closed numbering plans. A closed numbering plan, such as found in North America, features fixed length area codes and local numbers. An open numbering plan, as found in assorted countries that have not yet standardized, features variance in length of area code or local number, or both. Closed dialing plans are rare where numbering plans are open. net.
A closed numbering plan is one in which the subscriber's number is a standard length, and a closed dialing plan is one in which the subscriber's number is used for all calls, even in the same area. This has traditionally been the case in small countries and territories where area codes have not been required. However, there has been a trend in many countries towards making all numbers a standard length, and incorporating the area code into the subscriber's number. This usually makes the use of a trunk code obsolete. For example, to call Oslo in Norway before 1992, one would dial:
xxx xxx (within Oslo - no area code required)(02) xxx xxx (within Norway - outside Oslo)+47 2 xxx xxx (outside Norway)After 1992, this changed to a closed eight-digit numbering plan, eg:
22xx xxxx (within Norway - including Oslo) +47 22xx xxxx (outside Norway)In other countries, such as France, Belgium, Switzerland, and South Africa, the trunk code is retained for domestic calls, whether local or national, eg:
Paris 01 xxxx xxxx (outside France +33 1 xxxx xxxx)Brussels 02 xxx xxxx (outside Belgium +32 2 xxx xxxx)Geneva 022 xxx xxxx (outside Switzerland +41 22 xxx xxxx) Cape Town 021 xxx xxxx (outside South Africa +27 21 xxx xxxx)While the use of full national dialing is less user-friendly than only using a local number without the area code, the increased use of mobile phones, which require full national dialing and can store numbers, means that this is of decreasing importance. It also makes easier to display numbers in the international format, as no trunk code is required- hence a number in Prague Czech Republic can now be displayed as:
+420 2 xxxx xxxx formerly:02 xxxx xxxx (inside Czech Republic) +420 2 xxxx xxxx (outside Czech Republic)Main article: Argentine telephone numbering planCountry Code: 54International Prefix: 00
Main article: Australian telephone numbering plan
Country Code: 61International Prefix: 0011
Telephone numbers in Australia consist of a single-digit area code (prefixed with an 0 when dialling within Australia) and eight-digit local numbers, the first four of which generally specify the exchange, and the final four a line at that exchange. (Most exchanges though have several four-digit exchange codes. fonefinder. ) Within Australia, the area code is only required to call from one area code to another. Mobile phone numbers consist of a four-digit code, followed by two sets of three-digit codes.
Australia is divided geographically into a few large area codes, some of which cover more than one state and territory. Prior to the introduction of eight-digit numbers in the early to mid-1990s, telephone numbers were seven digits in the major capital cities, with a single-digit area code, and six digits in other areas with a two-digit area code. There were more than sixty such codes by 1990, with numbers running out, thus spurring the reorganisation.
Following reorganisation of the numbering plan between 1996 and 1998, the following numbering ranges are now used:
01 Domestic number nation-wide02 New South Wales and Australian Capital Territory03 Victoria and Tasmania04 Mobile phone services07 Queensland08 Northern Territory, South Australia and Western Australia (including Christmas Island and Cocos (Keeling) Islands).However the system is not perfect; sometimes the codes do not strictly follow state borders. 10-10 Phone Rates - Comparisons of long distance plans and directory of international online yellow pages and white pages. Examples include; Towns in Southern New South Wales that use the '03' prefix (examples include: Hay, Balranald, Wentworth, Deniliquin); and Broken Hill in New South Wales, which uses the '08' area code, (due to its previous area code of 080).
Main article: Area codes in Austria
Country Code: 43
Country Code: 55International Prefix: 00 xx
In Brazil, long distance and international dialling requires the use of carrier selection codes, after the trunk code or international access code. The places where these codes are inserted are shown here by "xx" Some of these codes are.
15 for Telefónica21 for Embratel23 for Intelig31 for TelemarArea codes are distributed geographically (See List of Brazilian area codes for a list). National dialing is prefixed with 0 (the trunk code) followed by the carrier code (see above) then the area code and the number. For example, to call Rio de Janeiro from another city in Brazil, one would dial the trunk code '0', a two-digit code, the area code '21' and the subscriber's number. Consequently, a Rio de Janeiro number would be displayed in Brazil as
0xx21 nnnn nnnn. 809 Area Code Phone Scam: Netlore Archive: Email warnings about an international telephone scam using the 809 area.A few areas use nnn-nnnn in lieu of nnnn nnnn, such as Natal (the area code for that state is '84', in the state of Rio Grande do Norte, in northeastern Brazil. However, this practice will be phased out in 2006.
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