These entries are queried from radb.net using whois, you can try my project getting these.
:AS33286 route: 12.178.51.0/24 descr: Turlock CA Irrigation District origin: AS33286 mnt-by: MAINT-CHTR-WD changed: john.abeln [at] chartercom.com 20090918 source: RADB last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source