UN

United Nations Statistics Division contributes to the European statistical system and to the governance or maintenance of NACE.

UN publishes ISIC — the national activity classification(s) aligned with NACE and used in business registries, tax filings and official statistics.

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 UN page published by its maintainer — see the official link on this page.