These entries are queried from radb.net using whois, you can try my project getting these.
:AS52714 route: 170.247.12.0/22 descr: PROXY FOR OPENX CUSTOMER origin: AS52714 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 route: 177.126.144.0/21 descr: G8 Networks origin: AS52714 mnt-by: MAINT-AS28329 changed: aldo.russo [at] g8.net.br 20160726 source: RADB last-modified: 2023-11-13T15:49:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:c78::/32 descr: PROXY FOR OPENX CUSTOMER origin: AS52714 mnt-by: MAINT-AS263444 notify: registro [at] openx.com.br changed: registro [at] openx.com.br 20190529 remarks: Wed May 29 17:41:27 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