The following is a complete list of the current officially assigned ISO 3166-1 alpha-3 codes, using the English short country names officially defined by the ISO 3166 Maintenance Agency (ISO 3166/MA):
User-assigned code elements are codes at the disposal of users who need to add further names of countries, territories, or other geographical entities to their in-house application of ISO 3166-1, and the ISO 3166/MA will never use these codes in the updating process of the standard. The following alpha-3 codes can be user-assigned: AAA to AAZ, QMA to QZZ, XAA to XZZ, and ZZA to ZZZ.
XXC is used to represent a refugee, other than as defined above
XXX is used to represent a person of unspecified nationality
WSA is used for the World Service AuthorityWorld Passport (The World Service Authority World Passport contains "WSA" as the authority code. It has been filed with the International Civil Aviation Organization, but does not appear in official ICAO documents as valid.)
NATO STANAG 1059 INT is built upon ISO alpha-3 codes, but also defines alpha-2 codes incompatible with ISO 3166-1. It introduces several private use codes for fictional countries and organizational entities:
NATO also continues to use reserved codes for continents:
NNN North America
SRR South America
NTT NATO countries
There are also three differences:
FYR vs. MKD Macedonia
MAL vs. MLI Mali
TZA vs. TZN Tanzania
Reserved code elements
Reserved code elements are codes which have become obsolete, or are required in order to enable a particular user application of the standard but do not qualify for inclusion in ISO 3166-1. To avoid transitional application problems and to aid users who require specific additional code elements for the functioning of their coding systems, the ISO 3166/MA, when justified, reserves these codes which it undertakes not to use for other than specified purposes during a limited or indeterminate period of time. The reserved alpha-3 codes can be divided into the following four categories: exceptional reservations, transitional reservations, indeterminate reservations, and codes currently agreed not to use.
Exceptionally reserved code elements are codes reserved at the request of national ISO member bodies, governments and international organizations, which are required in order to support a particular application, as specified by the requesting body and limited to such use; any further use of such code elements is subject to approval by the ISO 3166/MA. The following alpha-3 codes are currently exceptionally reserved:
Transitional reserved code elements are codes reserved after their deletion from ISO 3166-1. These codes may be used only during a transitional period of at least five years while new code elements that may have replaced them are taken into use. These codes may be reassigned by the ISO 3166/MA after the expiration of the transitional period. The following alpha-3 codes are currently transitionally reserved:
Indeterminately reserved code elements are codes used to designate road vehicles under the 1949 and 1968 United Nations Conventions on Road Traffic but differing from those contained in ISO 3166-1. These code elements are expected eventually to be either eliminated or replaced by code elements within ISO 3166-1. In the meantime, the ISO 3166/MA has reserved such code elements for an indeterminate period. Any use beyond the application of the two Conventions is discouraged and will not be approved by the ISO 3166/MA. Moreover, these codes may be reassigned by the ISO 3166/MA at any time. The following alpha-3 codes are currently indeterminately reserved:
^ ab"Appendix 7 to Section IV – Three-letter codes"(PDF). Doc 9303, Machine Readable Travel Documents, Part I – Machine Readable Passports, Volume I – Passports with Machine Readable Data Stored in Optical Character Recognition Format. International Civil Aviation Organization. pp. IV–43–IV–46.
^ISO International Organization for Standardization, ISO 3166 Maintenance Agency (1 February 2002). "RE: Change of alpha-3 Code Element"(PDF). ISO 3166-1 NEWSLETTER No. V-3. Archived from the original(PDF) on 2011-07-22. Retrieved 26 June 2017. Description of change: Change of the alpha-3 Code element for Romania from ROM to ROU following a request of the Government of Romania.
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