These entries are queried from radb.net using whois, you can try my project getting these.
:AS399572 route: 204.174.51.0/24 origin: AS399572 descr: Proxy Registered on Behalf of AS399572 mnt-by: MAINT-AS19009 changed: sburns [at] everstream.net 20210528 #19:25:00Z source: RADB last-modified: 2023-11-13T16:07:49Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:97:2000::/48 origin: AS399572 descr: Proxy Registered on Behalf of AS399572 mnt-by: MAINT-AS19009 changed: sburns [at] everstream.net 20210528 #19:27:31Z source: RADB last-modified: 2023-11-13T16:07:49Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source