These entries are queried from radb.net using whois, you can try my project getting these.
:AS399198 route: 209.36.135.0/24 origin: AS399198 descr: MTC3 remarks: Proxy object for AS399198 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