These entries are queried from radb.net using whois, you can try my project getting these.
:AS394795 route: 12.28.51.0/24 descr: Proxy for Hartmann Plantation Apts origin: AS394795 mnt-by: MAINT-CHTR-WD changed: kyle.edwards [at] charter.com 20160707 #18:18:55Z source: RADB last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source