These entries are queried from radb.net using whois, you can try my project getting these.
:AS33704 route6: 2604:7500::/32 descr: Nitco Maintained by IFN origin: AS33704 mnt-by: MAINT-AS32703 changed: admin [at] indianafiber.net 20110627 #15:14:15Z source: RADB last-modified: 2023-11-13T16:11:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source