These entries are queried from radb.net using whois, you can try my project getting these.
:AS20247 route: 204.174.224.0/24 descr: Mercy College origin: AS20247 mnt-by: MAINT-AS27506 changed: yikehara [at] lightower.com 20190219 source: RADB last-modified: 2023-11-13T15:55:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source