These entries are queried from radb.net using whois, you can try my project getting these.
:AS263971 route: 138.255.192.0/22 origin: AS263971 remarks: Auto-created by TC IRR from NIC.br and RIPE RIS data notify: hostmaster [at] falemais.net.br mnt-by: MAINT-AS263971 source: TC last-modified: 2021-06-11T12:55:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 138.255.192.0/22 descr: Bloco de Ip´s cliente "Netell/Falemais" criado pela equipe Durand do Brazil origin: AS263971 admin-c: Eduardo Fumes Parajo tech-c: Epafras Rezende Schaden mnt-by: MAINT-AS22356 changed: eduardo [at] durand.com.br 20150920 #17:51:16Z source: RADB last-modified: 2023-11-13T15:48:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 170.254.76.0/22 origin: AS263971 remarks: Auto-created by TC IRR from NIC.br and RIPE RIS data notify: hostmaster [at] falemais.net.br mnt-by: MAINT-AS263971 source: TC last-modified: 2021-06-11T12:55:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:28a0::/32 origin: AS263971 remarks: Auto-created by TC IRR from NIC.br and RIPE RIS data notify: hostmaster [at] falemais.net.br mnt-by: MAINT-AS263971 source: TC last-modified: 2021-06-11T12:55:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:28a0::/32 descr: Cemig origin: AS263971 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