These entries are queried from radb.net using whois, you can try my project getting these.
:AS59104 route: 150.37.0.0/16 descr: Soka University X-Keiro : center-mgr [at] soka.ac.jp origin: AS59104 notify: center-mgr [at] soka.ac.jp mnt-by: MAINT-AS59104 changed: center-mgr [at] soka.ac.jp 20231201 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source