These entries are queried from radb.net using whois, you can try my project getting these.
:AS62509 route: 66.206.96.0/20 descr: Proxy Entry for WAXAHACHIE ISD origin: AS62509 mnt-by: MAINT-CHTR-WD changed: julius.olevsky [at] chartercom.com 20130627 #21:07:56Z source: RADB last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source