These entries are queried from radb.net using whois, you can try my project getting these.
:AS263414 route6: 2804:15d8::/32 descr: Solicitado por nuestro cliente Datacorpore para Competiva. Abril 15 2014. origin: AS263414 mnt-by: MAINT-AS18678 changed: adminred [at] internexa.com 20140416 #15:13:13Z source: RADB last-modified: 2023-11-13T15:46:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source