https://finanzonline.bmf.gv.at/fon/ws/uidAbfrage/ https://finanzonline.bmf.gv.at:443/fonws/ws/sessionService http://ec.europa.eu/taxation_customs/vies/services/checkVatService http://ec.europa.eu/taxation_customs/dds2/eos/validation/services/validation https://ec.europa.eu/taxation_customs/dds2/eos/validation/services/validation http://ec.europa.eu/taxation_customs/vies/services/checkVatService