These entries are queried from radb.net using whois, you can try my project getting these.
:AS263273 route: 191.37.254.0/24 descr: BRASILNET origin: AS263273 mnt-by: MAINT-AS18678 changed: adminred [at] internexa.com 20170327 #21:01:40Z source: RADB last-modified: 2023-11-13T15:50:56Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2801:80:9f0::/48 origin: AS263273 descr: FORTE-CUSTOMER mnt-by: MAINT-AS263009 changed: douglas [at] fortetelecom.com.br 20190611 #13:16:44Z source: RADB last-modified: 2023-11-13T15:56:38Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source