These entries are queried from radb.net using whois, you can try my project getting these.
:AS394603 route: 199.21.163.0/24 origin: AS394603 descr: RSMT #ECR000001350769 remarks: Proxy object for AS394603 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220520 source: RADB last-modified: 2023-11-13T16:11:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source