These entries are queried from radb.net using whois, you can try my project getting these.
:AS262839 route: 186.251.240.0/21 descr: G8 Customer Proxy Route origin: AS262839 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 route: 186.251.240.0/22 descr: G8 Customer Proxy Route origin: AS262839 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 route: 186.251.244.0/22 descr: G8 Customer Proxy Route origin: AS262839 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: 2804:2cc::/32 descr: ITX-DB3 origin: AS262839 mnt-by: MAINT-AS18678 changed: noc [at] internexa.com 20180503 #18:49:14Z source: RADB last-modified: 2023-11-13T15:53:39Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source