These entries are queried from radb.net using whois, you can try my project getting these.
:AS268894 route6: 2804:5c34::/32 descr: PROXY FOR OPENX CUSTOMER origin: AS268894 mnt-by: MAINT-AS263444 notify: registro [at] openx.com.br changed: registro [at] openx.com.br 20200424 remarks: Fri Apr 24 16:11:16 2020 source: RADB last-modified: 2023-11-13T16:00:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source