Definition: Country Nomenclature for the External Trade Statistics of the Community and Statistics of Trade between Member States (GEONOM)
As the title of the EU Regulation indicates, this is the country nomenclature to be used for the external trade statistics of the European Union and statistics of trade between Member States. For some countries, it defines exactly what is to be understood as its territory (for instance, for the purposes of external trade statistics, the territory of Portugal includes Azores and Madeira, whereas the territory of Italy excludes San Marino).
Since 1. January 1999 the country nomenclature is based on the ISO alpha-2 classification, which means that each country is identified with a two-letter alphabetical code.