These entries are queried from radb.net using whois, you can try my project getting these.
:AS270907 route: 189.50.56.0/22 descr: G8 Customer Proxy Route origin: AS270907 mnt-by: MAINT-AS28329 changed: no-reply [at] g8.net.br 20200709 source: RADB last-modified: 2023-11-13T16:01:12Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 189.50.56.0/23 descr: CLARO S.A. Customer origin: AS270907 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20221007 source: RADB last-modified: 2023-11-13T16:12:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 189.50.59.0/24 descr: G8 Customer Proxy Route origin: AS270907 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: 189.50.59.1/32 descr: G8 Customer Proxy Route origin: AS270907 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: 2804:7350::/32 descr: G8 Customer Proxy Route origin: AS270907 mnt-by: MAINT-AS28329 changed: no-reply [at] g8.net.br 20200709 source: RADB last-modified: 2023-11-13T16:01:12Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source