These entries are queried from radb.net using whois, you can try my project getting these.
:AS393904 route: 192.146.199.0/24 origin: AS393904 descr: VEGAS remarks: Proxy object for AS393904 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220513 source: RADB last-modified: 2023-11-13T16:11:05Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source