These entries are queried from radb.net using whois, you can try my project getting these.
:AS54223 route: 204.145.210.0/24 descr: Proxy Entry for etrailer.com origin: AS54223 mnt-by: MAINT-CHTR-WD changed: terry.peters [at] chartercom.com 20130407 #06:07:26Z source: RADB last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source