These entries are queried from radb.net using whois, you can try my project getting these.
:AS272524 route6: 2804:8284::/32 descr: PROXY FOR OPENX CUSTOMER origin: AS272524 mnt-by: MAINT-AS263444 notify: registro [at] openx.com.br changed: registro [at] openx.com.br 20210818 remarks: Wed Aug 18 12:23:57 2021 source: RADB last-modified: 2023-11-13T16:08:03Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source