These entries are queried from radb.net using whois, you can try my project getting these.
:AS23804 route: 203.192.96.0/19 descr: Non-Profit Organization Akita IT plathome association origin: AS23804 notify: peer [at] sakura.ad.jp mnt-by: MAINT-AS7684 changed: peer [at] sakura.ad.jp 20240101 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.192.96.0/19 descr: Non-Profit Organization Akita IT plathome association origin: AS23804 notify: peer [at] sakura.ad.jp mnt-by: MAINT-AS7684 changed: ozaki [at] sakura.ad.jp 20040325 source: RADB last-modified: 2023-11-13T15:39:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source