The Key register Addresses and Buildings (in Dutch: Basisregistratie Adressen en Gebouwen, BAG) contains municipal basic data of all addresses and buildings inside the municipality. Copies of these data are collected in a National Facility (Landelijke Voorziening, BAG LV). The Dutch land registration organisation Kadaster manages the BAG LV, and provides data to public offices, institutions, companies, and private citizens. The Minister of the Interior and Kingdom Relations is responsible for the BAG system.