These entries are queried from radb.net using whois, you can try my project getting these.
:AS18123 route: 202.236.76.0/22 descr: Kanazawa College of Economics origin: AS18123 mnt-by: MAINT-AS2907 changed: as2907 [at] sinet.ad.jp 20230404 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.236.76.0/22 descr: INAOKI SEIRYO origin: AS18123 notify: sys-ng [at] seiryo-u.ac.jp mnt-by: MAINT-AS18123 changed: masuzawa [at] ntt.ocn.ne.jp 20020521 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.244.84.0/23 descr: Seiryo Women's Junior College origin: AS18123 mnt-by: MAINT-AS2907 changed: as2907 [at] sinet.ad.jp 20230404 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.244.84.0/23 descr: INAOKI SEIRYO origin: AS18123 notify: sys-ng [at] seiryo-u.ac.jp mnt-by: MAINT-AS18123 changed: masuzawa [at] ntt.ocn.ne.jp 20020521 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:df0:2e4::/48 descr: Kanazawa Seiryo University origin: AS18123 mnt-by: MAINT-AS2907 changed: as2907 [at] sinet.ad.jp 20230404 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source