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  • List of country calling codes

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    Country calling codes or country dial in codes are telephone dialing prefixes for the member countries or regions of the International Telecommunication Union (ITU). They are defined by the ITU-T in standards E.123 and E.164. The prefixes enable international direct dialing (IDD), and are also referred to as international subscriber dialing (ISD) codes. Worldwide distribution of country calling codes colored by first digit Country codes are a component of the international telephone numbering plan, and are necessary only when dialing a telephone number to establish a call to another country. Country codes are dialed before the national telephone number. By convention, international telephone numbers are represented by prefixing the country code with a plus sign (+), which also indicates to the subscriber that the local international call prefix must first be dialed. For example, the international call prefix in all countries belonging to the North American Numbering Plan is 011, while it is 00 in most European, Asian and African countries. On GSM (cellular) networks, the prefix may automatically be inserted when the user prefixes a dialed number with the plus sign.

  • Area code 246

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    The area code 246 in the North American Numbering Plan (NANP) is a composite part of the telephone numbering plan for Barbados. It is regulated by the government's Telecommunications Unit, which holds responsibility for telecommunications. The number 246 spells , a nickname for the island. Due to a long established affiliation with the NANP, telephone numbers in Barbados are often styled as (246) NXX-xxxx. However, this can cause confusion with Diego Garcia which is assigned the country code 246 under the International Telecommunications Union standard E.164. As such, other international standards like E.123 advocate the inclusion of the prefix +1 to indicate 246 is a part of the NANP.

  • List of international call prefixes

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    An international call prefix or dial out code is a trunk prefix used to select an international telephone circuit for placing an international call. It is often referred to as IDD Prefix (International Direct Dialing) – a country will typically have a NDD Prefix as well (National Direct Dialing). The international dialing prefix must be dialed before the country calling code and the destination telephone number. It is synonymous with international access code or exit code. The international call prefix is part of the telephone numbering plan of a country for calls to another country. The International Telecommunication Union (ITU) recommends the sequence 00 as a standard for an international call prefix, and this has been implemented by many countries, but not all of them. Some countries use the 00 prefix which is followed by the international carrier code. When phone numbers are published for use abroad, they typically show a plus sign (+) prefix in place of any international call prefix, to signify that the caller should use the prefix code appropriate for their country.

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