These entries are queried from radb.net using whois, you can try my project getting these.
:AS21591 route: 12.108.132.0/22 descr: AS21591 proxy-registered route by Cogent origin: AS21591 remarks: Proxy-registered route object remarks: for Cogent customer notify: neteng [at] cogentco.com mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20031230 source: RADB last-modified: 2023-11-13T15:39:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 12.158.136.0/22 descr: AS21591 proxy-registered route by Cogent origin: AS21591 remarks: Proxy-registered route object remarks: for Cogent customer notify: neteng [at] cogentco.com mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20031230 source: RADB last-modified: 2023-11-13T15:39:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 65.168.204.0/22 descr: AS21591 proxy-registered route by Cogent origin: AS21591 remarks: Proxy-registered route object remarks: for Cogent customer notify: neteng [at] cogentco.com mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20031230 source: RADB last-modified: 2023-11-13T15:39:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 67.14.160.0/19 descr: AS21591 proxy-registered route by Cogent origin: AS21591 remarks: Proxy-registered route object remarks: for Cogent customer notify: neteng [at] cogentco.com mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20040308 source: RADB last-modified: 2023-11-13T15:39:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 139.146.44.0/22 descr: AS21591 proxy-registered route by Cogent origin: AS21591 remarks: Proxy-registered route object remarks: for Cogent customer notify: neteng [at] cogentco.com mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20040517 source: RADB last-modified: 2023-11-13T15:39:35Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 139.146.124.0/22 descr: AS21591 proxy-registered route by Cogent origin: AS21591 remarks: Proxy-registered route object remarks: for Cogent customer notify: neteng [at] cogentco.com mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20040329 source: RADB last-modified: 2023-11-13T15:39:35Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 139.146.128.0/17 descr: AS21591 proxy-registered route by Cogent origin: AS21591 remarks: Proxy-registered route object remarks: for Cogent customer notify: neteng [at] cogentco.com mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20040517 source: RADB last-modified: 2023-11-13T15:39:35Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 139.146.244.0/24 descr: NETSTANDARD INC origin: AS21591 mnt-by: MAINT-CCI changed: john.schupp [at] consolidated.com 20160224 #16:12:34Z source: RADB last-modified: 2023-11-13T15:48:45Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 139.146.245.0/24 descr: NETSTANDARD INC origin: AS21591 mnt-by: MAINT-CCI changed: john.schupp [at] consolidated.com 20160224 #16:12:59Z source: RADB last-modified: 2023-11-13T15:48:45Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 139.146.246.0/24 descr: NETSTANDARD INC origin: AS21591 mnt-by: MAINT-CCI changed: john.schupp [at] consolidated.com 20160224 #16:13:19Z source: RADB last-modified: 2023-11-13T15:48:45Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 139.146.247.0/24 descr: NETSTANDARD INC origin: AS21591 mnt-by: MAINT-CCI changed: john.schupp [at] consolidated.com 20160224 #16:13:40Z source: RADB last-modified: 2023-11-13T15:48:45Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.230.224.0/20 descr: AS21591 proxy-registered route by Cogent origin: AS21591 remarks: Proxy-registered route object remarks: for Cogent customer notify: neteng [at] cogentco.com mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20031230 source: RADB last-modified: 2023-11-13T15:39:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.34.42.0/24 descr: AS21591 proxy-registered route by Cogent origin: AS21591 remarks: Proxy-registered route object remarks: for Cogent customer notify: neteng [at] cogentco.com mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20031230 source: RADB last-modified: 2023-11-13T15:39:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source