OECD

Organisation for Economic Co-operation and Development contributes to the European statistical system and to the governance or maintenance of NACE.

NACEBridge reads authoritative definitions from Eurostat and each national statistical institute, then aligns them at the 4-digit NACE class so users can move between systems without losing meaning.

The authoritative source is the OECD page published by its maintainer — see the official link on this page.