These entries are queried from radb.net using whois, you can try my project getting these.
:AS28348 route: 189.51.16.0/20 descr: G8 Networks origin: AS28348 mnt-by: MAINT-AS28329 changed: noc [at] g8.net.br 20150616 source: RADB last-modified: 2023-11-13T15:48:08Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source