These entries are queried from radb.net using whois, you can try my project getting these.
:AS400417 route: 192.150.213.0/24 origin: AS400417 descr: Central Iowa Power Cooperative (CIPC-CN-01) mnt-by: MAINT-AS15164 changed: zach.lamm [at] upnfiber.com 20220817 #15:00:07Z source: RADB last-modified: 2023-11-13T16:12:11Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source