These entries are queried from radb.net using whois, you can try my project getting these.
:AS266471 route: 170.83.48.0/22 descr: Proxy-registered route object remarks: --------------------------------- remarks: For SECURITY issues, please send messages to remarks: origin AS administrator remarks: (e.g. whois -h whois.registro.br AS266471) remarks: --------------------------------- remarks: This route is from a Oi customer which remarks: is being exported under origin AS below. remarks: It was created by us because no other remarks: route object with the same origin was found. remarks: --------------------------------- remarks: Please contact BGPOI-RADB if you have any remarks: questions regarding this object. remarks: --------------------------------- origin: AS266471 notify: ip-bgp [at] oi.net.br mnt-by: MAINT-AS8167 changed: ip-bgp [at] oi.net.br 20171208 source: RADB last-modified: 2023-11-13T15:53:43Z rpki-ov-state: valid route: 170.83.48.0/22 descr: SKY TECNET origin: AS266471 mnt-by: MAINT-AS266471 changed: junior [at] routerx.net.br 20210622 source: ALTDB rpki-ov-state: valid route: 170.83.48.0/23 descr: SKY TECNET origin: AS266471 mnt-by: MAINT-AS266471 changed: junior [at] routerx.net.br 20210622 source: ALTDB rpki-ov-state: valid route: 170.83.48.0/24 descr: SKY TECNET origin: AS266471 mnt-by: MAINT-AS266471 changed: junior [at] routerx.net.br 20210622 source: ALTDB rpki-ov-state: valid route: 170.83.49.0/24 descr: SKY TECNET origin: AS266471 mnt-by: MAINT-AS266471 changed: junior [at] routerx.net.br 20210622 source: ALTDB rpki-ov-state: valid route: 170.83.50.0/23 descr: CLARO S.A. Customer origin: AS266471 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20221020 source: RADB last-modified: 2023-11-13T16:12:46Z rpki-ov-state: valid route: 170.83.50.0/23 descr: SKY TECNET origin: AS266471 mnt-by: MAINT-AS266471 changed: junior [at] routerx.net.br 20210622 source: ALTDB rpki-ov-state: valid route: 170.83.50.0/24 descr: G8 Customer Proxy Route origin: AS266471 mnt-by: MAINT-AS28329 changed: no-reply [at] g8.net.br source: RADB last-modified: 2024-01-24T23:00:10Z rpki-ov-state: valid route: 170.83.51.0/24 descr: CLARO S.A. Customer origin: AS266471 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20210729 source: RADB last-modified: 2023-11-13T16:08:00Z rpki-ov-state: valid route6: 2804:3858::/32 descr: Proxy-registered route object remarks: --------------------------------- remarks: For SECURITY issues, please send messages to remarks: origin AS administrator remarks: (e.g. whois -h whois.registro.br AS266471) remarks: --------------------------------- remarks: This route is from a Oi customer which remarks: is being exported under origin AS below. remarks: It was created by us because no other remarks: route object with the same origin was found. remarks: --------------------------------- remarks: Please contact BGPOI-RADB if you have any remarks: questions regarding this object. remarks: --------------------------------- origin: AS266471 notify: ip-bgp [at] oi.net.br mnt-by: MAINT-AS8167 changed: ip-bgp [at] oi.net.br 20171208 source: RADB last-modified: 2023-11-13T15:53:43Z rpki-ov-state: valid route6: 2804:3858::/32 descr: SKY TECNET origin: AS266471 mnt-by: MAINT-AS266471 changed: junior [at] routerx.net.br 20210622 source: ALTDB rpki-ov-state: valid