These entries are queried from radb.net using whois, you can try my project getting these.
:AS398988 route: 64.190.217.0/24 origin: AS398988 descr: 31002 C38 Le Mars IA 51031 United States admin-c: SPIEL16-ARIN tech-c: LUDWI119-ARIN tech-c: SPIEL16-ARIN mnt-by: MNT-NIPC-12 created: 2021-08-18T14:54:01Z last-modified: 2021-08-18T14:54:01Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.190.217.0/24 origin: AS398988 descr: Organization: Northwest Iowa Power Cooperative (NIPC-12) Registration Date: 2020-10-21 Last Updated: 2020-10-30 Comments: RESTful Link https://whois.arin.net/rest/net/NET-64-190-217-0-1 mnt-by: MAINT-AS5056 changed: packetnetworking [at] aureon.com 20201103 #19:51:32Z source: RADB last-modified: 2023-11-13T16:02:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source