These entries are queried from radb.net using whois, you can try my project getting these.
:AS28296 route: 177.75.38.0/24 origin: AS28296 descr: ACESSA-TELECOM-BRASILNET-CONCESSION admin-c: CGR Brasilnet tech-c: CGR Brasilnet mnt-by: MAINT-262808 changed: felipe.videira [at] brasilnet.net.br 20220606 #20:46:06Z source: RADB last-modified: 2023-11-13T16:11:24Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 177.75.39.0/24 origin: AS28296 descr: ACESSA-TELECOM-BRASILNET-CONCESSION admin-c: CGR Brasilnet tech-c: CGR Brasilnet mnt-by: MAINT-262808 changed: felipe.videira [at] brasilnet.net.br 20220606 #20:47:37Z source: RADB last-modified: 2023-11-13T16:11:24Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 187.121.224.0/20 descr: PROXY FOR OPENX CUSTOMER origin: AS28296 mnt-by: MAINT-AS263444 notify: registro [at] openx.com.br changed: registro [at] openx.com.br 20201104 remarks: Wed Nov 4 17:33:39 2020 source: RADB last-modified: 2023-11-13T16:02:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 187.121.224.0/21 origin: AS28296 descr: Acessa Telecom mnt-by: MAINT-AS264100 changed: cgr [at] riocable.com.br 20231003 #08:09:49Z source: RADB last-modified: 2023-11-13T16:18:47Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 187.121.227.0/24 origin: AS28296 descr: ACESSA-TELECOM-ROUTE mnt-by: MAINT-262808 changed: guilherme.furriel [at] brasilnet.net.br 20240318 # 1229Z source: RADB last-modified: 2024-03-18T12:29:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 187.121.232.0/21 origin: AS28296 descr: Acessa Telecom mnt-by: MAINT-AS264100 changed: cgr [at] riocable.com.br 20231003 #08:11:58Z source: RADB last-modified: 2023-11-13T16:18:47Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 189.36.208.0/20 descr: PROXY FOR OPENX CUSTOMER origin: AS28296 mnt-by: MAINT-AS263444 notify: registro [at] openx.com.br changed: registro [at] openx.com.br 20201104 remarks: Wed Nov 4 17:33:39 2020 source: RADB last-modified: 2023-11-13T16:02:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 189.36.208.0/21 origin: AS28296 descr: Acessa Telecom mnt-by: MAINT-AS264100 changed: cgr [at] riocable.com.br 20230929 #19:50:12Z source: RADB last-modified: 2023-11-13T16:18:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 189.36.213.0/24 origin: AS28296 descr: ACESSA-TELECOM-ROUTES admin-c: CGR Brasilnet tech-c: CGR Brasilnet mnt-by: MAINT-262808 changed: felipe.videira [at] brasilnet.net.br 20220720 #12:26:54Z source: RADB last-modified: 2023-11-13T16:11:47Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 189.36.214.0/24 origin: AS28296 descr: ACESSA-TELECOM-ROUTE admin-c: CGR Brasilnet tech-c: CGR Brasilnet mnt-by: MAINT-262808 changed: felipe.videira [at] brasilnet.net.br 20220720 #12:27:30Z source: RADB last-modified: 2023-11-13T16:11:47Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 189.36.216.0/21 origin: AS28296 descr: Acessa Telecom mnt-by: MAINT-AS264100 changed: cgr [at] riocable.com.br 20231003 #08:08:41Z source: RADB last-modified: 2023-11-13T16:18:47Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 189.36.222.0/24 origin: AS28296 descr: ACESSA-TELECOM-ROUTE mnt-by: MAINT-262808 changed: guilherme.furriel [at] brasilnet.net.br 20240318 # 1248Z source: RADB last-modified: 2024-03-18T12:48:27Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:1298::/32 descr: PROXY FOR OPENX CUSTOMER origin: AS28296 mnt-by: MAINT-AS263444 notify: registro [at] openx.com.br changed: registro [at] openx.com.br 20190529 remarks: Wed May 29 17:41:27 2019 source: RADB last-modified: 2023-11-13T16:00:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source