These entries are queried from radb.net using whois, you can try my project getting these.
:AS266466 route: 170.83.16.0/22 origin: AS266466 remarks: Auto-created by TC IRR from NIC.br and RIPE RIS data notify: noc [at] bariguitelecom.com.br mnt-by: MAINT-AS266466 source: TC last-modified: 2023-06-07T20:16:24Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 170.83.16.0/22 descr: BRASILNET origin: AS266466 mnt-by: MAINT-AS18678 changed: adminred [at] internexa.com 20170417 #20:49:41Z source: RADB last-modified: 2023-11-13T15:50:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 170.83.16.0/23 descr: CLARO S.A. Customer origin: AS266466 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20210813 source: RADB last-modified: 2023-11-13T16:08:02Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 170.83.18.0/23 descr: CLARO S.A. Customer origin: AS266466 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20210813 source: RADB last-modified: 2023-11-13T16:08:02Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:3844::/32 origin: AS266466 remarks: Auto-created by TC IRR from NIC.br and RIPE RIS data notify: noc [at] bariguitelecom.com.br mnt-by: MAINT-AS266466 source: TC last-modified: 2023-06-07T20:16:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:3844::/32 descr: BRASILNET origin: AS266466 mnt-by: MAINT-AS18678 changed: adminred [at] internexa.com 20170417 #20:50:47Z source: RADB last-modified: 2023-11-13T15:50:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source