These entries are queried from radb.net using whois, you can try my project getting these.
:AS263998 route: 143.0.84.0/22 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 AS263998) 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: AS263998 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: 143.0.84.0/22 descr: SIM Telecom origin: AS263998 mnt-by: MAINT-AS263998 notify: suporte [at] siminternetsc.com.br changed: noc [at] openx.com.br 20230202 source: ALTDB rpki-ov-state: valid route: 143.0.84.0/22 descr: MM Telecom origin: AS263998 notify: db-admin [at] bgp.net.br mnt-by: MAINT-AS263998 changed: db-admin [at] bgp.net.br 20200219 source: TC last-modified: 2021-05-05T02:07:41Z rpki-ov-state: valid route: 143.0.84.0/23 descr: SIM Telecom origin: AS263998 mnt-by: MAINT-AS263998 notify: suporte [at] siminternetsc.com.br changed: noc [at] openx.com.br 20230202 source: ALTDB rpki-ov-state: valid route: 143.0.84.0/24 descr: SIM Telecom origin: AS263998 mnt-by: MAINT-AS263998 notify: suporte [at] siminternetsc.com.br changed: noc [at] openx.com.br 20230202 source: ALTDB rpki-ov-state: valid route: 143.0.85.0/24 descr: SIM Telecom origin: AS263998 mnt-by: MAINT-AS263998 notify: suporte [at] siminternetsc.com.br changed: noc [at] openx.com.br 20230202 source: ALTDB rpki-ov-state: valid route: 143.0.86.0/23 descr: SIM Telecom origin: AS263998 mnt-by: MAINT-AS263998 notify: suporte [at] siminternetsc.com.br changed: noc [at] openx.com.br 20230202 source: ALTDB rpki-ov-state: valid route: 143.0.86.0/24 descr: SIM Telecom origin: AS263998 mnt-by: MAINT-AS263998 notify: suporte [at] siminternetsc.com.br changed: noc [at] openx.com.br 20230202 source: ALTDB rpki-ov-state: valid route: 143.0.87.0/24 descr: SIM Telecom origin: AS263998 mnt-by: MAINT-AS263998 notify: suporte [at] siminternetsc.com.br changed: noc [at] openx.com.br 20230202 source: ALTDB rpki-ov-state: valid route: 170.245.200.0/22 descr: ITX-GRUPOG1 origin: AS263998 mnt-by: MAINT-AS18678 changed: noc [at] internexa.com 20180606 #17:37:12Z source: RADB last-modified: 2023-11-13T15:53:46Z rpki-ov-state: valid route: 170.245.200.0/22 descr: SIM Telecom origin: AS263998 mnt-by: MAINT-AS263998 notify: suporte [at] siminternetsc.com.br changed: noc [at] openx.com.br 20230202 source: ALTDB rpki-ov-state: valid route: 170.245.200.0/22 descr: MM Telecom origin: AS263998 notify: db-admin [at] bgp.net.br mnt-by: MAINT-AS263998 changed: db-admin [at] bgp.net.br 20200219 source: TC last-modified: 2021-05-05T02:07:41Z rpki-ov-state: valid route: 170.245.200.0/23 descr: SIM Telecom origin: AS263998 mnt-by: MAINT-AS263998 notify: suporte [at] siminternetsc.com.br changed: noc [at] openx.com.br 20230202 source: ALTDB rpki-ov-state: valid route: 170.245.200.0/24 descr: SIM Telecom origin: AS263998 mnt-by: MAINT-AS263998 notify: suporte [at] siminternetsc.com.br changed: noc [at] openx.com.br 20230202 source: ALTDB rpki-ov-state: valid route: 170.245.201.0/24 descr: SIM Telecom origin: AS263998 mnt-by: MAINT-AS263998 notify: suporte [at] siminternetsc.com.br changed: noc [at] openx.com.br 20230202 source: ALTDB rpki-ov-state: valid route: 170.245.202.0/23 descr: SIM Telecom origin: AS263998 mnt-by: MAINT-AS263998 notify: suporte [at] siminternetsc.com.br changed: noc [at] openx.com.br 20230202 source: ALTDB rpki-ov-state: valid route: 170.245.202.0/24 descr: SIM Telecom origin: AS263998 mnt-by: MAINT-AS263998 notify: suporte [at] siminternetsc.com.br changed: noc [at] openx.com.br 20230202 source: ALTDB rpki-ov-state: valid route: 170.245.203.0/24 descr: SIM Telecom origin: AS263998 mnt-by: MAINT-AS263998 notify: suporte [at] siminternetsc.com.br changed: noc [at] openx.com.br 20230202 source: ALTDB rpki-ov-state: valid route6: 2804:291c::/32 descr: SIM Telecom origin: AS263998 mnt-by: MAINT-AS263998 notify: suporte [at] siminternetsc.com.br changed: noc [at] openx.com.br 20230202 source: ALTDB rpki-ov-state: valid route6: 2804:291c::/32 origin: AS263998 descr: This is a Commcorp Telecom customer proxy route object that was created because no existing route object with the same origin was found. Please contact noc [at] commcorp.com.br if you have any questions regarding this object. mnt-by: MAINT-AS14840 changed: fpgosch [at] commcorp.com.br 20200322 #04:47:19Z source: RADB last-modified: 2023-11-13T16:00:16Z rpki-ov-state: valid route6: 2804:291c::/36 descr: SIM Telecom origin: AS263998 mnt-by: MAINT-AS263998 notify: suporte [at] siminternetsc.com.br changed: noc [at] openx.com.br 20230202 source: ALTDB rpki-ov-state: valid route6: 2804:291c:1000::/36 descr: SIM Telecom origin: AS263998 mnt-by: MAINT-AS263998 notify: suporte [at] siminternetsc.com.br changed: noc [at] openx.com.br 20230202 source: ALTDB rpki-ov-state: valid route6: 2804:291c:4000::/40 descr: SIM Telecom origin: AS263998 mnt-by: MAINT-AS263998 notify: suporte [at] siminternetsc.com.br changed: noc [at] openx.com.br 20230202 source: ALTDB rpki-ov-state: valid