These entries are queried from radb.net using whois, you can try my project getting these.
:AS262627 route6: 2804:51f0::/32 origin: AS262627 descr: Proxy Route for Clienteorigin: 262476 mnt-by: MAINT-262476 changed: suporte [at] brcentral.com.br 20190928 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:51f0::/32 descr: G8 Customer Proxy Route origin: AS262627 mnt-by: MAINT-AS28329 changed: no-reply [at] g8.net.br 20200306 source: RADB last-modified: 2023-11-13T16:00:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source