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. The 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 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.[1]

When phone numbers are published for use abroad they typically include the country calling code, but 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.[2]

Many phones allow this "+" to be entered in their saved number lists, often by holding down the '0' key (most GSM mobile phones) or with two consecutive presses of the * key. When making a call the system then automatically converts the "+" 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.[3]

Example[edit]

Variations[edit]

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.[4]

Some of these variations from the generic codes are shown in the list below (but may be out of date).

Countries by international prefix[5][edit]

Historic international prefixes[edit]

See also[edit]

Notes[edit]

  1. ^ There is an additional dial tone that applies only to calls from landlines.

References[edit]

  1. ^ "E.164 - 12" (PDF). International Telecommunication Union (ITU-T). "See page 22 for a list of exceptions" 
  2. ^ "E.123 - 7.1" (PDF). International Telecommunication Union (ITU-T). "See page 9" 
  3. ^ "The plus (+) sign and international calls". How to call abroad. Archived from the original on 2010-12-15. 
  4. ^ "International landline dialing prefix by country". T-Mobile. Archived from the original on 2005-11-26. 
  5. ^ International Call Prefixes List

External links[edit]