These entries are queried from radb.net using whois, you can try my project getting these.
:AS269509 route6: 2804:65b4::/32 descr: PROXY FOR OPENX CUSTOMER origin: AS269509 mnt-by: MAINT-AS263444 notify: registro [at] openx.com.br changed: registro [at] openx.com.br 20210219 remarks: Sat Feb 20 01:17:17 2021 source: RADB last-modified: 2023-11-13T16:03:39Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source