These entries are queried from radb.net using whois, you can try my project getting these.
:AS9591 route: 133.75.0.0/16 descr: National Institute for Fusion Science origin: AS9591 mnt-by: MAINT-AS2907 changed: as2907 [at] sinet.ad.jp 20230501 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 133.75.0.0/16 descr: National Institute for Fusion Science origin: AS9591 mnt-by: MAINT-AS7684 changed: peer [at] sakura.ad.jp 20150820 source: RADB last-modified: 2023-11-13T15:48:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source