As a member of EFTA, Norway (NO) is not included in the Classification of Territorial Units for Statistics (NUTS), but in a similar classification used for coding statistical regions of countries that are not part of the EU but are candidate countries, potential candidates or EFTA countries.
The three levels are: The codes are as follows: Below these levels, there are two LAU levels (LAU-1: economic regions; LAU-2: municipalities).
The LAU codes of Norway can be downloaded here: [1]