These entries are queried from radb.net using whois, you can try my project getting these.
:AS264072 route: 143.0.208.0/22 descr: ANTONIO G DE SOUSA JUNIOR - ME origin: AS264072 notify: db-admin [at] bgp.net.br mnt-by: MAINT-AS264072 changed: db-admin [at] bgp.net.br 20190920 source: TC last-modified: 2021-05-05T02:07:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 143.0.208.0/22 descr: CLARO S.A. Customer origin: AS264072 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20201106 source: RADB last-modified: 2023-11-13T16:02:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:2a6c::/32 origin: AS264072 descr: COSTUMER ANTONIO G DE SOUSA JUNIOR - ME mnt-by: MAINT-AS28598 changed: cassio.passos [at] mobtelecom.com.br 20190813 #23:27:57Z source: RADB last-modified: 2023-11-13T16:12:07Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source