European legislation (valid from January 2018) requires that all investment companies register in a common global register of legal entities.
LEIs are issued by various companies and you can find a complete list at www.leiroc.org.
This list include companies like: NordLEI, Euronext Dublin, WM Datenservice, Bloomberg LEI and NorgeLEI.
We do not recommend any special providers, but below you will find links to some providers that are often used in the Nordics: