These entries are queried from radb.net using whois, you can try my project getting these.
:AS11752 route: 189.76.96.0/19 descr: NIC.br Network origin: AS11752 notify: noc [at] registro.br mnt-by: MAINT-AS22548 changed: noc [at] registro.br 20120626 source: RADB last-modified: 2023-11-13T15:43:21Z rpki-ov-state: valid route6: 2001:12fe::/32 descr: NIC.br Network origin: AS11752 notify: noc [at] registro.br mnt-by: MAINT-AS22548 changed: noc [at] registro.br 20130513 source: RADB last-modified: 2023-11-13T15:45:25Z rpki-ov-state: valid