These entries are queried from radb.net using whois, you can try my project getting these.
:AS394754 route: 50.233.179.0/24 descr: Mount Aurburn Hospital origin: AS394754 mnt-by: MAINT-AS27506 changed: rsansone [at] lightower.com 20160815 source: RADB last-modified: 2023-11-13T15:49:48Z rpki-ov-state: valid route: 209.160.133.0/24 descr: Mount Auburn origin: AS394754 mnt-by: MAINT-AS17378 changed: jason.gariepy [at] tierpoint.com 20160302 #17:51:30Z source: RADB last-modified: 2023-11-13T16:17:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source