These entries are queried from radb.net using whois, you can try my project getting these.
:AS55380 route: 133.28.0.0/16 descr: Kanazawa Universiry origin: AS55380 mnt-by: MAINT-AS7684 changed: peer [at] sakura.ad.jp 20150326 source: RADB last-modified: 2023-11-13T15:47:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source