These entries are queried from radb.net using whois, you can try my project getting these.
:AS19663 route: 12.147.44.0/24 descr: Cass Information Systems origin: AS19663 mnt-by: MAINT-CHTR-WD changed: steven.hurst [at] chartercom.com 20121018 #20:30:39Z source: RADB last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source