These entries are queried from radb.net using whois, you can try my project getting these.
:AS263467 route: 177.221.240.0/20 origin: AS263467 descr: Proxy Route for Clienteorigin: 262476 mnt-by: MAINT-262476 changed: suporte [at] brcentral.com.br 20171220 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 177.221.240.0/20 descr: G8 Customer Proxy Route origin: AS263467 mnt-by: MAINT-AS28329 changed: no-reply [at] g8.net.br 20230828 source: RADB last-modified: 2023-11-13T16:18:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:1248::/32 origin: AS263467 descr: Route for Clienteorigin: 262476 mnt-by: MAINT-262476 changed: suporte [at] brcentral.com.br 20220315 source: NTTCOM last-modified: 2022-03-15T19:57:14Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:1248::/32 descr: G8 Networks origin: AS263467 mnt-by: MAINT-AS28329 changed: no-reply [at] g8.net.br 20200407 source: RADB last-modified: 2023-11-13T16:00:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:1248:4000::/36 descr: G8 Customer Proxy Route origin: AS263467 mnt-by: MAINT-AS28329 changed: no-reply [at] g8.net.br 20230828 source: RADB last-modified: 2023-11-13T16:18:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source