In the course of several observing runs, we obtained optical spectra of 37 AGN candidates with uncertain classification. Twenty of them turned out to be extragalactic HII regions ionized by hot stars, while seventeen were confirmed to be QSOs, BL Lac or Seyfert galaxies. In a previous paper (Véron-Cetty & Véron 1986), the classification of 61 AGN candidates was given.