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Country codes are short alphabetic or numeric geographical codes ( geocodes) developed to represent countries and dependent areas, for use in data processing and communications. Several different systems have been developed to do this. The most famous of these is ISO 3166-1.1 Lists of country codes by country
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O-RA B C D-E F G H-I J-K L M N O-R S T U-Z Oman ISO 3166-1 Numerical 512 ISO 3166-1 Alpha-3 OMN ISO 3166-1 Alpha-2 OM License plate code OM E. 164 country calling code(s) 968 IOC country code OMA Country code TLD . om FIPS country code(s) MU E. 212 mobile co -
SA B C D-E F G H-I J-K L M N O-R S T U-Z Saint Helena ISO 3166-1 Numerical 654 ISO 3166-1 Alpha-3 SHN ISO 3166-1 Alpha-2 SH License plate code E. 164 country calling code(s) 290 IOC country code Country code TLD . sh FIPS country code(s) SH E. 212 mobile c -
TA B C D-E F G H-I J-K L M N O-R S T U-Z Taiwan ISO 3166-1 Numerical 158 ISO 3166-1 Alpha-3 TWN ISO 3166-1 Alpha-2 TW License plate code RC E. 164 country calling code(s) 886 IOC country code TPE Country code TLD . tw FIPS country code(s) TW E. 212 mobile -
U-ZA B C D-E F G H-I J-K L M N O-R S T U-Z Uganda ISO 3166-1 Numerical 800 ISO 3166-1 Alpha-3 UGA ISO 3166-1 Alpha-2 UG License plate code EAU E. 164 country calling code(s) 256 IOC country code UGA Country code TLD . ug FIPS country code(s) UG E. 212 mobile
2 ISO 3166-1
Main article: ISO 3166-1
This standard defines for most of the countries and dependent areas in the world:
- a two letter ( ISO 3166-1 alpha-2ISO 3166-1 alpha-2 codes are the best known part of ISO 3166-1 and subsequent use as most of the country codes for Internet domain names (see also External Links below). Uses and applications The codes are used in different environments and are also part)
- a three-letter ( ISO 3166-1 alpha-3ISO 3166-1 alpha-3 is used in ISO/IEC 7501-1 for machine-readable passports. For current codes see: 3166-1 Reserved Code Elements list The following alpha-3 codes are user-assigned: AAA, QMA-QZZ, XAA-XZZ, and ZZZ. The following alpha-3 codes are subject t), and
- a three-digit numeric ( ISO 3166-1 numericISO 3166-1 numeric-3 is a set of 3-digit codes to represent the names of countries and dependent areas. It is published by the International Organization for Standardization (ISO) as part of its ISO 3166 standard and uses the 3-digit country codes develop) code.
The two-letter codes are used as the basis for some other codes or applications, e.g.
- for ISO 4217ISO 4217 is an international standard describing three letter codes to define the names of currencies established by the International Organization for Standardization or ISO. The first two letters of the code are the two letters of ISO 3166-1 alpha-2 cou currency codes and
- with deviations for country code top-level domain names (ccTLDs) on the Internet: list of Internet TLDs.
For more applications see ISO 3166-1 alpha-2.
3 Other country codes
- The International Olympic Committee (IOC) three letter codes used in sporting events: list of IOC country codes,
- The coding system for car license plates under the 1949 and 1968 United Nations Road Traffic Conventions (distinguishing signs of vehicles in international traffic): List of international license plate codes [1]
- The Federal Information Processing Standard (FIPS) two letter codes used by the US government and in the CIA World Factbook: list of FIPS country codes,
- The coding system for diplomatic license plates in the United States , assigned by the U.S. State Department.
- From the International Telecommunication Union (ITU):
- the E.164 international dialling codes: list of country calling codes with 1-3 digits,
- the E.212 mobile country codes (MCC), for mobile/wireless phone addresses,
- the first few characters of call signs of radio stations (maritime, aeronautical, amateur radio, broadcasting, etc.) define the country: the ITU prefix,
- ITU letter codes for member-countries,
- Three-digit codes used to identify countries in maritime mobile radio transmissions, known as maritime identification digits
- European Union:
- From the International Civil Aviation Organization (ICAO):
- aircraft registration prefixes,
- nationality letters for location indicators.
The developers of ISO 3166 intended that in time it would replace other coding systems in existence.