These entries are queried from radb.net using whois, you can try my project getting these.
:AS264053 route: 143.137.212.0/22 origin: AS264053 remarks: Auto-created by TC IRR from NIC.br and RIPE RIS data notify: suporte [at] centertelmais.com.br mnt-by: MAINT-AS264053 source: TC last-modified: 2022-12-20T15:27:14Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 143.137.212.0/22 descr: G8 Networks origin: AS264053 mnt-by: MAINT-AS28329 changed: aldo.russo [at] g8.net.br 20151109 source: RADB last-modified: 2023-11-13T15:48:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 143.137.212.0/23 descr: CLARO S.A. Customer origin: AS264053 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20230927 source: RADB last-modified: 2023-11-13T16:18:45Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 143.137.212.0/24 descr: CLARO S.A. Customer origin: AS264053 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20231221 source: RADB last-modified: 2023-12-21T13:51:08Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 143.137.213.0/24 descr: CLARO S.A. Customer origin: AS264053 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20231221 source: RADB last-modified: 2023-12-21T13:51:08Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 143.137.214.0/23 descr: CLARO S.A. Customer origin: AS264053 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20230927 source: RADB last-modified: 2023-11-13T16:18:45Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 143.137.214.0/24 descr: CLARO S.A. Customer origin: AS264053 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20230927 source: RADB last-modified: 2023-11-13T16:18:45Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 143.137.215.0/24 descr: CLARO S.A. Customer origin: AS264053 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20230927 source: RADB last-modified: 2023-11-13T16:18:45Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:2a0c::/32 origin: AS264053 remarks: Auto-created by TC IRR from NIC.br and RIPE RIS data notify: suporte [at] centertelmais.com.br mnt-by: MAINT-AS264053 source: TC last-modified: 2022-12-20T15:27:15Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:2a0c::/32 descr: Cemig origin: AS264053 mnt-by: MAINT-AS18678 changed: adminred [at] internexa.com 20170203 #13:53:20Z source: RADB last-modified: 2023-11-13T15:50:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source