ISO 3166-2:ES
ISO 3166-2:ES is the entry for Spain in ISO 3166-2, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), which defines codes for the names of the principal subdivisions (e.g., provinces or states) of all countries coded in ISO 3166-1. Currently for Spain, ISO 3166-2 codes are defined for two levels of subdivisions: Each code consists of two parts, separated by a hyphen. The first part is , the ISO 3166-1 alpha-2 code of Spain. The second part is one or two letters. For the provinces , the letters were originally used in vehicle registration plates. The codes for the following provinces are based on the names of their capital cities rather than their own names: Current codes. Subdivision names are listed as in the ISO 3166-2 standard published by the ISO 3166 Maintenance Agency (ISO 3166/MA). ISO 639-1 codes are used to represent subdivision names in the following administrative languages: Except where noted, the names given are in Spanish (Castilian). In autonomous communities and provinces where any of the regional languages is the sole official language, the Spanish name is given in square  brackets for information. In subdivisions where a regional language is official alongside Spanish, both names are listed vertically. Changes. The following changes to the entry have been announced in newsletters by the ISO 3166/MA since the first publication of ISO 3166-2 in 1998: Special territories. The following two areas not covered by European Union Customs arrangements are also exceptionally reserved ISO 3166-1 alpha-2 codes on the request of the World Customs Organization: However, these codes do not correspond in any way to the ISO 3166-2 codes of the territories.