>EU is also not an ISO code, but has been reserved, and is also a TLD as .eu. `eu` is also exceptionally reserved in the ISO database, which is enough for ICAN

>EU is also not an ISO code, but has been reserved, and is also a TLD as .eu. `eu` is also exceptionally reserved in the ISO database, which is enough for ICANN. The ISO states in their FAQ: "You can use EU for the name European Union. Please note that this is not an official ISO 3166-1 country code. The European Union is not a country but rather an organization. As such it is not eligible to be formally included in ISO 3166-1. Recognizing, however, that many users of ISO 3166-1 have a practical need to encode that name the ISO 3166/MA reserved the two-letter combination EU for the purpose of identifying the European Union within the framework of ISO 3166-1."