These entries are queried from radb.net using whois, you can try my project getting these.
:AS54989 route: 38.56.64.0/22 origin: AS54989 descr: Route Registered for Cogent Communications Customer - Duncan Cable TV geoidx: US mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20221101 source: RADB last-modified: 2023-11-13T16:13:05Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.17.97.0/24 descr: Proxy route object for DUNCAN TELECOMMUNICATIONS LLC origin: AS54989 admin-c: IA93-ARIN tech-c: IA93-ARIN notify: ip-admin [at] firstlight.net mnt-by: MAINT-SOVER-NOC changed: jhall [at] firstlight.net 20220715 source: RADB last-modified: 2023-11-13T16:11:46Z rpki-ov-state: valid route: 64.17.119.0/24 descr: Proxy route object for DUNCAN TELECOMMUNICATIONS LLC origin: AS54989 admin-c: IA93-ARIN tech-c: IA93-ARIN notify: ip-admin [at] firstlight.net mnt-by: MAINT-SOVER-NOC changed: jhall [at] firstlight.net 20220715 source: RADB last-modified: 2023-11-13T16:11:46Z rpki-ov-state: valid route: 198.168.32.0/21 descr: DCTV origin: AS54989 mnt-by: MAINT-SOVER-NOC changed: noc [at] sover.net 20140212 #15:13:39Z source: RADB last-modified: 2023-11-13T16:00:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.84.88.0/22 origin: AS54989 descr: Route Registered for Cogent Communications Customer - Duncan Communications mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20210118 #19:05:23Z source: RADB last-modified: 2023-11-13T16:03:24Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 207.136.204.0/24 descr: Proxy route object for DUNCAN TELECOMMUNICATIONS LLC origin: AS54989 admin-c: IA93-ARIN tech-c: IA93-ARIN notify: ip-admin [at] firstlight.net mnt-by: MAINT-SOVER-NOC changed: jhall [at] firstlight.net 20220715 source: RADB last-modified: 2023-11-13T16:11:46Z rpki-ov-state: valid route: 209.198.81.0/24 descr: Proxy route object for DUNCAN TELECOMMUNICATIONS LLC origin: AS54989 admin-c: IA93-ARIN tech-c: IA93-ARIN notify: ip-admin [at] firstlight.net mnt-by: MAINT-SOVER-NOC changed: jhall [at] firstlight.net 20220715 source: RADB last-modified: 2023-11-13T16:11:46Z rpki-ov-state: valid route: 216.114.149.0/24 descr: Proxy route object for DUNCAN TELECOMMUNICATIONS LLC origin: AS54989 admin-c: IA93-ARIN tech-c: IA93-ARIN notify: ip-admin [at] firstlight.net mnt-by: MAINT-SOVER-NOC changed: jhall [at] firstlight.net 20220715 source: RADB last-modified: 2023-11-13T16:11:46Z rpki-ov-state: valid route: 216.114.178.0/24 descr: Proxy route object for DUNCAN TELECOMMUNICATIONS LLC origin: AS54989 admin-c: IA93-ARIN tech-c: IA93-ARIN notify: ip-admin [at] firstlight.net mnt-by: MAINT-SOVER-NOC changed: jhall [at] firstlight.net 20220715 source: RADB last-modified: 2023-11-13T16:11:46Z rpki-ov-state: valid route: 216.114.179.0/24 descr: Proxy route object for DUNCAN TELECOMMUNICATIONS LLC origin: AS54989 admin-c: IA93-ARIN tech-c: IA93-ARIN notify: ip-admin [at] firstlight.net mnt-by: MAINT-SOVER-NOC changed: jhall [at] firstlight.net 20220715 source: RADB last-modified: 2023-11-13T16:11:46Z rpki-ov-state: valid