ICAO    IATA     TOWN                      COUNTRY                       AIRPORT

IOAS    ???      SAFI ABAD                 IRAN
IOFZ    ???      NATANZ                    IRAN
IOHS    ---      HAMADAN                   IRAN                          MIL.
IOHU    ???      TOOYSERKAN                IRAN
IONV    ???      TONKABON                  IRAN
IOYQ    ???      KHEZR ABAD                IRAN