Address points on Urbis Services layer on https://datastore.brussels/web/map   give  pn_name_dut  and  pn_name_fre  to attach to the correct street. But numbering here seams realy strange ; it's look like "units" ; S.I.S.P En Bord de Soignes and als-vsh have internal database with the information (street to attach ; probably not if address point on Urbis are correct or  not) maybe they are open to share the info ? 