Country codes

published ISO standard

internet top-level domain generally used or reserved for a country

four-letter code designating many airports around the world

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alphabetic or numeric geographical codes that represent countries and dependent areas

two-letter country codes defined in ISO 3166-1

registration and identification assigned to an individual aircraft by national aviation authorities

unique code including a serial number, used by the automotive industry to identify individual motor vehicles, towed vehicles, motorcycles, scooters and mopeds

three-letter country codes defined in ISO 3166-1

UN/LOCODE, the United Nations Code for Trade and Transport Locations, is a geographic coding scheme developed and maintained by United Nations Economic Commission for Europe (UNECE). UN/LOCODE assigns codes to locations used in trade and transport with functions such as seaports, rail and road terminals, airports, Postal Exchange Office and border crossing points. The first issue in 1981 contained codes for 8,000 locations. The version from 2011 contained codes for about 82,000 locations.

Country code as defined in ITU-T Recommendation

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special type of top-level domain

three-digit numeric code to identify countries

european identifier for watercraft that are mainly used on inland waterways

Latin 3-letter code

3-digit code used by a radio communication facility to identify home country/base area in Digital Selective Calling, Automatic Transmitter Identification System and Automatic Identification System messages; part of Maritime Mobile Service Identity

type of dictionary