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 two letters code a country by the table defined in ISO 3166-1 alpha-2.
According to the Secretariat note for Issue 2006-2, there are 720 locations showing a different IATA code.
Complete UN/LOCODE code list may be downloaded in the format of.mdb (MS Access database), .txt (text file) and .csv (Comma-separated values).