These entries are queried from radb.net using whois, you can try my project getting these.
:AS263874 route: 38.252.82.0/23 origin: AS263874 descr: Route Registered for Cogent Communications Customer - WBR INTERNET LTDA geoidx: BR mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20230717 #16:21:30Z source: RADB last-modified: 2023-11-13T16:17:47Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 138.186.220.0/22 descr: PROXY FOR OPENX CUSTOMER origin: AS263874 mnt-by: MAINT-AS263444 notify: registro [at] openx.com.br changed: registro [at] openx.com.br 20190820 remarks: Tue Aug 20 12:26:22 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 route: 138.186.220.0/23 descr: CLARO S.A. Customer origin: AS263874 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20220407 source: RADB last-modified: 2023-11-13T16:10:50Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:2714::/32 descr: Cemig origin: AS263874 mnt-by: MAINT-AS18678 changed: adminred [at] internexa.com 20170203 #13:53:20Z source: RADB last-modified: 2023-11-13T15:50:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source