List of international call prefixes

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 now called an IDD prefix (international direct dialing) – a country will typically have an NDD prefix as well (national direct dialing).[1] 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 most countries, but not all of them.[2] 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.[3] Many phones allow the plus sign to be entered in their saved number lists, often by holding down the zero (0) key (most GSM mobile phones) or with two consecutive presses of the star (*) key. When making a call, the system then automatically converts the plus sign to the correct international prefix, depending on where the phone is being used, which enables callers to use the same stored number when calling from either their own country or any other.[4]

Example

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Calling the Dunedin City Council in New Zealand:

Call placed from	Number dialed	IDD Prefix
China, Italy, the United Kingdom or any other country following the ITU-recommendation	00 64 3 477 4000	00
Canada, United States or any other NANP country direct-dial using the default long distance carrier	011 64 3 477 4000	011
Canada, United States or any other NANP country direct-dial using an alternative long distance carrier (where xxxx is the carrier number)	101 xxxx 011 64 3 477 4000	011
Canada, United States or any other NANP country operator assisted using the default long distance carrier	01 64 3 477 4000	01
Japan	010 64 3 477 4000	010
Australia	0011 64 3 477 4000	0011
Russia (using predefined international call operator)	810 64 3 477 4000	810
Phones that allow the plus symbol (+), e.g. mobile phone	+ 64 3 477 4000	auto-generated depending on location of phone
New Zealand	03 477 4000	N/A (domestic call)

Variations

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Some telecommunications service providers or mobile network operators (wireless carriers) have different international call prefix codes which callers or subscribers can use to route calls through specific networks, sometimes with special pricing arrangements.

Many countries also provide alternative dialling arrangements for calls to neighbouring countries.[5]

Some of these variations from the generic codes are shown in the list below (but may be out of date).

Countries by international prefix

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Countries using optional carrier selection code

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The following is a non-exhaustive list of countries that allow for optional carrier selection in addition to using the standard prefix.

• 01x, where x is the international carrier selection code consisting of one or more digits:
  • Israel, in addition to the standard prefix 00 for default carrier (see Telephone numbering in Israel)
    • 012 – 012 Smile
    • 013 – 013 NetVision
    • 014 – Bezeq International
    • 015 – Hallo 015
    • 016 – Golan Telecom
    • 017 – Hot Mobile
    • 018 – Xfone
    • 019 – Telzar
• 10x, where x is the international carrier selection code consisting of two digits:
  • Georgia, in addition to the standard prefix 00 for default carrier
    • 1000 – default carrier
    • 1007 – Caucasus Online
    • 1010 – MagtiCom
    • 1011 – SystemNet
    • 1012 – SystemNet
    • 1013 – MacroCom
    • 1015 – SakTelComPlus
    • 1016 – Silknet
    • 1017 – SystemNet
    • 1018 – Global Erty
    • 1019 – Akhtel
    • 1027 – CallCenter
    • 1040 – IntelPhone
    • 1041 – V-TEL Georgia
    • 1050 – MagtiCom
    • 1051 – Caucasus Online
    • 1052 – Alex Development Georgia
    • 1053 – Sky Service
    • 1054 – Lagi
    • 1057 – NewCom
    • 1060 – GeoNet
    • 1061 – Silknet
    • 1062 – Geocell
    • 1063 – Black Sea Telecom
    • 1064 – Central Communication Company of Georgia
    • 1065 – New Net
    • 1067 – GeoTel
    • 1069 – Service
    • 1072 – TelMax
    • 1075 – Wi-MAX Georgia
    • 1076 – Silknet
    • 1094 – Warid Telecom Georgia
• 99x, where x is the international carrier selection code consisting of one or more digits:
  • Finland, in addition to the standard prefix 00 for default carrier (see Telephone numbering in Finland)
    • 990 – Telia Finland Oyj
    • 991 – Elisa Oyj
    • 99511 – Nettia Oy
    • 99533 – DNA Oy
    • 99555 – DNA Oy
    • 99559 – Elisa Oyj
    • 99577 – DNA Oy
    • 99588 – Globetel
    • 99599 - Nettia Oy
    • 999 – Elisa Oyj

Historic international prefixes

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See also

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• List of country calling codes
• List of mobile phone number series by country
• List of North American Numbering Plan area codes
• Public switched telephone network

Notes

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References

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