These entries are queried from radb.net using whois, you can try my project getting these.
:AS27453 route: 204.225.208.0/24 descr: Proxy registration to prevent harm from ARIN-NONAUTH shutdown origin: AS27453 mnt-by: MAINT-AS7034 changed: kennethfinnegan2007 [at] gmail.com 20220404 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source