These entries are queried from radb.net using whois, you can try my project getting these.
:AS271457 route: 190.52.64.0/22 origin: AS271457 remarks: Auto-created by TC IRR from NIC.br and RIPE RIS data notify: noc [at] voltsnet.net.br mnt-by: MAINT-AS271457 source: TC last-modified: 2021-10-15T12:55:12Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 190.52.66.0/23 descr: CLARO S.A. Customer origin: AS271457 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20230718 source: RADB last-modified: 2023-11-13T16:17:48Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 190.52.66.0/24 descr: CLARO S.A. Customer origin: AS271457 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20230808 source: RADB last-modified: 2023-11-13T16:18:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 190.52.67.0/24 descr: CLARO S.A. Customer origin: AS271457 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20230808 source: RADB last-modified: 2023-11-13T16:18:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:7bd4::/32 origin: AS271457 remarks: Auto-created by TC IRR from NIC.br and RIPE RIS data notify: noc [at] voltsnet.net.br mnt-by: MAINT-AS271457 source: TC last-modified: 2021-10-15T12:55:12Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:7bd4:f000::/36 descr: CLARO S.A. Customer origin: AS271457 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20230718 source: RADB last-modified: 2023-11-13T16:17:48Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source