These entries are queried from radb.net using whois, you can try my project getting these.
:AS264016 route6: 2804:2974::/32 origin: AS264016 descr: Cilnet Comunicacoes e Informatica Ltda notify: diego [at] fasternet.com.br mnt-by: MAINT-AS28580 changed: csirt [at] noc.faster.com.br 20220701 #13:45:27Z source: RADB last-modified: 2023-11-13T16:11:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source