These entries are queried from radb.net using whois, you can try my project getting these.
:AS398952 route: 206.204.108.0/23 origin: AS398952 descr: RSMT remarks: Proxy object for AS398952 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