These entries are queried from radb.net using whois, you can try my project getting these.
:AS17946 route: 133.66.0.0/16 descr: Gifu University origin: AS17946 mnt-by: MAINT-AS2907 changed: as2907 [at] sinet.ad.jp 20230802 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 133.66.0.0/16 descr: Gifu University origin: AS17946 mnt-by: MAINT-AS7684 changed: peer [at] sakura.ad.jp 20151020 source: RADB last-modified: 2023-11-13T15:48:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source