These entries are queried from radb.net using whois, you can try my project getting these.
:AS394112 route: 192.163.21.0/24 descr: Proxy for St. Anthony's Medical Center origin: AS394112 mnt-by: MAINT-CHTR-WD changed: kyle.edwards [at] charter.com 20161024 #20:29:22Z source: RADB last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source