These entries are queried from radb.net using whois, you can try my project getting these.
:AS53199 route6: 2804:2168::/32 descr: PROXY FOR OPENX CUSTOMER origin: AS53199 mnt-by: MAINT-AS263444 notify: registro [at] openx.com.br changed: registro [at] openx.com.br 20230531 remarks: Wed May 31 15:36:18 2023 source: RADB last-modified: 2023-11-13T16:17:25Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source