These entries are queried from radb.net using whois, you can try my project getting these.
:AS398242 route: 152.86.0.0/20 descr: Prentiss County Electric Power Association descr: PO Box 428 descr: Booneville, MS 38829 descr: US origin: AS398242 mnt-by: MNT-PCEPA changed: brandon.curry [at] fiber-rise.com 20200401 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.71.80.0/20 origin: AS398242 descr: PO Box 428 Booneville MS 38829 United States admin-c: RBD7-ARIN tech-c: BTH100-ARIN tech-c: HANCO211-ARIN tech-c: JEM49-ARIN tech-c: JMH31-ARIN tech-c: KOWAL91-ARIN tech-c: RBD7-ARIN tech-c: TL636-ARIN mnt-by: MNT-PCEPA created: 2021-02-25T19:01:14Z last-modified: 2023-06-23T22:56:33Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source