  Aims: We present new results from our ongoing multiplicity study of exoplanet
host stars, carried out with SofI/NTT. We provide the most recent list of
confirmed binary and triple star systems that harbor exoplanets.
  Methods: We use direct imaging to identify wide stellar and substellar
companions as co-moving objects to the observed exoplanet host stars, whose
masses and spectral types are determined with follow-up photometry and
spectroscopy.
  Results: We found two new co-moving companions of the exoplanet host stars
HD125612 and HD212301. HD125612B is a wide M4 dwarf (0.18 Msun) companion of
the exoplanet host star HD125612, located about 1.5 arcmin (~4750 AU of
projected separation) south-east of its primary. In contrast, HD212301B is a
close M3 dwarf (0.35 Msun), which is found about 4.4 arcsec (~230 AU of
projected separation) north-west of its primary.
  Conclusions: The binaries HD125612AB and HD212301AB are new members in the
continuously growing list of exoplanet host star systems of which 43 are
presently known. Hence, the multiplicity rate of exoplanet host stars is about
17%.
  Based on observations obtained on La Silla in ESO programs 079.C-0099(A),
080.C-0312(A)
