These entries are queried from radb.net using whois, you can try my project getting these.
:AS270491 route: 24.152.100.0/22 descr: PROXY FOR OPENX CUSTOMER origin: AS270491 mnt-by: MAINT-AS263444 notify: registro [at] openx.com.br changed: registro [at] openx.com.br 20210308 remarks: Mon Mar 8 21:18:13 2021 source: RADB last-modified: 2023-11-13T16:05:08Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 24.152.101.0/24 descr: CLARO S.A. Customer origin: AS270491 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20200422 source: RADB last-modified: 2023-11-13T16:00:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 24.152.102.0/24 descr: CLARO S.A. Customer origin: AS270491 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20200422 source: RADB last-modified: 2023-11-13T16:00:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:6cc8::/32 descr: PROXY FOR OPENX CUSTOMER origin: AS270491 mnt-by: MAINT-AS263444 notify: registro [at] openx.com.br changed: registro [at] openx.com.br 20200416 remarks: Thu Apr 16 15:49:22 2020 source: RADB last-modified: 2023-11-13T16:00:24Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source