These entries are queried from radb.net using whois, you can try my project getting these.
:AS398896 route: 204.15.214.0/24 origin: AS398896 mnt-by: MNT-MI-2046 descr: Magnusson Institute https://magnusson.institute mi-networking [at] magnusson.institute tech-c: WEBMA361-ARIN admin-c: WEBMA361-ARIN source: ARIN created: 2020-10-08T22:21:56Z last-modified: 2020-10-08T22:21:56Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source