These entries are queried from radb.net using whois, you can try my project getting these.
:AS263368 route6: 2804:1508::/32 origin: AS263368 descr: ITX-GEGNET mnt-by: MAINT-AS18678 changed: noc [at] internexa.com 20190213 #21:46:11Z source: RADB last-modified: 2023-11-13T15:55:40Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source