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Country codes are defined by the International Telecommunication Union (ITU) in ITU-T standards E.123 and E.164. The prefixes enable international direct dialing (IDD). Country codes constitute the international telephone numbering plan. They are used only when dialing a telephone number in a country or world region other than the caller's.
This is a list of international dialing prefixes used in various countries for direct dialing of international telephone calls.These prefixes are typically required only when dialling from a landline, while in GSM-compliant mobile phone (cell phone) systems, the symbol + before the country code may be used irrespective of where the telephone is used at that moment; the network operator ...
The sortable table below contains the three sets of ISO 3166-1 country codes for each of its 249 countries, links to the ISO 3166-2 country subdivision codes, and the Internet country code top-level domains (ccTLD) which are based on the ISO 3166-1 alpha-2 standard with the few exceptions noted. See the ISO 3166-3 standard for former country codes.
In telecommunications, a country code, or international subscriber dialing (ISD) code, is a telephone number prefix used in international direct dialing (IDD) and for destination routing of telephone calls to a country other than the caller's.
BUR - IOC code for Burkina Faso [f] (since 1984) [g], and historical ISO and FIFA code for Burma [h] (until 1989) [i] In the following cases, a code for a historical country or territory matches a modern code of the country it merged into: VNM - historical IOC and ISO code for South Vietnam [j], became the ISO code for unified Vietnam [k]
It defines three sets of country codes: [1] ISO 3166-1 alpha-2 – two-letter country codes which are used most prominently for the Internet's country code top-level domains (with a few exceptions). ISO 3166-1 alpha-3 – three-letter country codes which allow a better visual association between the codes and the country names than the alpha-2 ...
The two-letter country codes were used by the US government for geographical data processing in many publications, such as the CIA World Factbook. The standard is also known as DAFIF 0413 ed 7 Amdt. No. 3 (Nov 2003) and as DIA 65-18 ( Defense Intelligence Agency , 1994, "Geopolitical Data Elements and Related Features").
Short dialing codes are assigned for special services or network features. [3] [4] 0 – Trunk prefix for calls within Switzerland; 00 – International call prefix; 1 – Short numbers, see table below (3, 4 or 5 digit length) 107xx – Carrier selection code (+ national or international number)