These entries are queried from radb.net using whois, you can try my project getting these.
:AS273678 route: 38.156.90.0/24 origin: AS273678 descr: Route Registered for Cogent Communications Customer - RR FIBRA OTICA TELECOM LTDA geoidx: BR mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20230227 #17:47:01Z source: RADB last-modified: 2023-11-13T16:15:21Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:8a98::/32 descr: RR Fibra Optica origin: AS273678 notify: rogerlmiranda [at] gmail.com mnt-by: MAINT-AS273678 changed: rogerlmiranda [at] gmail.com 20230222 source: TC last-modified: 2023-02-22T15:35:50Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:8a98::/32 descr: CLARO S.A. Customer origin: AS273678 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20230628 source: RADB last-modified: 2023-11-13T16:17:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source