These entries are queried from radb.net using whois, you can try my project getting these.
:AS264807 route: 170.238.16.0/22 descr: PROXY FOR OPENX CUSTOMER origin: AS264807 mnt-by: MAINT-AS263444 notify: registro [at] openx.com.br changed: registro [at] openx.com.br 20190529 remarks: Wed May 29 17:38:46 2019 source: RADB last-modified: 2023-11-13T16:00:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2803:74c0::/32 descr: PROXY FOR OPENX CUSTOMER origin: AS264807 mnt-by: MAINT-AS263444 notify: registro [at] openx.com.br changed: registro [at] openx.com.br 20200605 remarks: Fri Jun 5 13:20:59 2020 source: RADB last-modified: 2023-11-13T16:00:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source