These entries are queried from radb.net using whois, you can try my project getting these.
:AS267971 route: 45.166.220.0/22 descr: PROXY FOR OPENX CUSTOMER origin: AS267971 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: 45.166.220.0/22 origin: AS267971 descr: CUSTOMER SECW TELECOM mnt-by: MAINT-AS266409 changed: bgp [at] secw.net.br 20200408 #20200324 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 45.166.220.0/23 descr: G8 Customer Proxy Route origin: AS267971 mnt-by: MAINT-AS28329 changed: no-reply [at] g8.net.br 20200505 source: RADB last-modified: 2023-11-13T16:00:38Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 45.166.220.0/24 descr: Connect Telecom AS270375 Customer origin: AS267971 remarks: Proxy Object notify: noc [at] cnnct.net.br mnt-by: MAINT-AS270375 changed: noc [at] cnnct.net.br 20231227 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 45.166.221.0/24 descr: CLARO S.A. Customer origin: AS267971 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20231221 source: RADB last-modified: 2023-12-21T13:51:08Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 45.166.221.0/24 descr: Connect Telecom AS270375 Customer origin: AS267971 remarks: Proxy Object notify: noc [at] cnnct.net.br mnt-by: MAINT-AS270375 changed: noc [at] cnnct.net.br 20231227 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 45.166.222.0/24 descr: Connect Telecom AS270375 Customer origin: AS267971 remarks: Proxy Object notify: noc [at] cnnct.net.br mnt-by: MAINT-AS270375 changed: noc [at] cnnct.net.br 20231227 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 45.166.222.0/24 descr: G8 Customer Proxy Route origin: AS267971 mnt-by: MAINT-AS28329 changed: no-reply [at] g8.net.br 20200505 source: RADB last-modified: 2023-11-13T16:00:38Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 45.166.223.0/24 origin: AS267971 descr: CUSTOMER SECW TELECOM mnt-by: MAINT-AS266409 changed: bgp [at] secw.net.br 20200307 #20200307 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:5604::/32 descr: PROXY FOR OPENX CUSTOMER origin: AS267971 mnt-by: MAINT-AS263444 notify: registro [at] openx.com.br changed: registro [at] openx.com.br 20201015 remarks: Thu Oct 15 08:11:15 2020 source: RADB last-modified: 2023-11-13T16:02:25Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:5604::/33 descr: G8 Customer Proxy Route origin: AS267971 mnt-by: MAINT-AS28329 changed: no-reply [at] g8.net.br 20200505 source: RADB last-modified: 2023-11-13T16:00:38Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source