These entries are queried from radb.net using whois, you can try my project getting these.
:AS399256 route: 208.64.34.0/23 descr: Fontana United School District origin: AS399256 mnt-by: MAINT-AS27506 changed: adam.cohen [at] crowncastle.com 20210223 source: RADB last-modified: 2023-11-13T16:03:40Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.64.35.0/24 descr: RR-RC-FONTANA UNIFIED SCHOOL DISTRICT-West origin: AS399256 admin-c: IPADD1-ARIN tech-c: IPADD1-ARIN notify: PublicIPAdressing [at] charter.com mnt-by: MAINT-RR changed: PublicIPAdressing [at] charter.com 20220405 source: RADB last-modified: 2023-11-13T16:15:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source