These entries are queried from radb.net using whois, you can try my project getting these.
:AS27708 route: 168.243.24.0/21 descr: COLUMBUS NETWORKS TRANSIT CUSTOMERS origin: AS27708 notify: ipservices [at] columbus-networks.com mnt-by: MAINT-AS23520 changed: oortiz [at] columbus-networks.com 20110905 source: RADB last-modified: 2023-11-13T15:55:48Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 168.243.48.0/21 descr: COLUMBUS NETWORKS TRANSIT CUSTOMERS origin: AS27708 notify: ipservices [at] cwc.com mnt-by: MAINT-AS23520 changed: giovanna.castro [at] cwc.com 20200129 source: RADB last-modified: 2023-11-13T15:59:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 190.151.176.0/20 descr: COLUMBUS NETWORKS TRANSIT CUSTOMERS origin: AS27708 notify: ipservices [at] cwc.com mnt-by: MAINT-AS23520 changed: giovanna.castro [at] cwc.com 20200129 source: RADB last-modified: 2023-11-13T15:59:41Z rpki-ov-state: valid route: 190.151.178.0/24 descr: COLUMBUS NETWORKS TRANSIT CUSTOMERS origin: AS27708 notify: ipservices [at] columbus-networks.com mnt-by: MAINT-AS23520 changed: drestrepo [at] columbus-networks.com 20110831 source: RADB last-modified: 2023-11-13T15:55:48Z rpki-ov-state: valid route: 190.151.179.0/24 descr: COLUMBUS NETWORKS TRANSIT CUSTOMERS origin: AS27708 notify: ipservices [at] columbus-networks.com mnt-by: MAINT-AS23520 changed: drestrepo [at] columbus-networks.com 20110831 source: RADB last-modified: 2023-11-13T15:55:48Z rpki-ov-state: valid route: 190.151.180.0/24 descr: COLUMBUS NETWORKS TRANSIT CUSTOMERS origin: AS27708 notify: ipservices [at] columbus-networks.com mnt-by: MAINT-AS23520 changed: drestrepo [at] columbus-networks.com 20110831 source: RADB last-modified: 2023-11-13T15:55:48Z rpki-ov-state: valid route: 190.151.181.0/24 descr: COLUMBUS NETWORKS TRANSIT CUSTOMERS origin: AS27708 notify: ipservices [at] columbus-networks.com mnt-by: MAINT-AS23520 changed: drestrepo [at] columbus-networks.com 20110831 source: RADB last-modified: 2023-11-13T15:55:48Z rpki-ov-state: valid route: 190.151.182.0/24 descr: COLUMBUS NETWORKS TRANSIT CUSTOMERS origin: AS27708 notify: ipservices [at] columbus.co mnt-by: MAINT-AS23520 changed: rafael.espinosa [at] cwc.com 20191105 source: RADB last-modified: 2023-11-13T15:58:36Z rpki-ov-state: valid route: 190.151.183.0/24 descr: COLUMBUS NETWORKS TRANSIT CUSTOMERS origin: AS27708 notify: ipservices [at] columbus.co mnt-by: MAINT-AS23520 changed: rafael.espinosa [at] cwc.com 20191105 source: RADB last-modified: 2023-11-13T15:58:36Z rpki-ov-state: valid route: 190.151.184.0/24 descr: COLUMBUS NETWORKS TRANSIT CUSTOMERS origin: AS27708 notify: ipservices [at] columbus.co mnt-by: MAINT-AS23520 changed: rafael.espinosa [at] cwc.com 20191105 source: RADB last-modified: 2023-11-13T15:58:36Z rpki-ov-state: valid route: 190.151.185.0/24 descr: COLUMBUS NETWORKS TRANSIT CUSTOMERS origin: AS27708 notify: ipservices [at] columbus.co mnt-by: MAINT-AS23520 changed: rafael.espinosa [at] cwc.com 20191105 source: RADB last-modified: 2023-11-13T15:58:36Z rpki-ov-state: valid route: 190.151.186.0/24 descr: COLUMBUS NETWORKS TRANSIT CUSTOMERS origin: AS27708 notify: ipservices [at] columbus.co mnt-by: MAINT-AS23520 changed: rafael.espinosa [at] cwc.com 20191105 source: RADB last-modified: 2023-11-13T15:58:36Z rpki-ov-state: valid route: 190.151.187.0/24 descr: COLUMBUS NETWORKS TRANSIT CUSTOMERS origin: AS27708 notify: ipservices [at] columbus.co mnt-by: MAINT-AS23520 changed: rafael.espinosa [at] cwc.com 20191105 source: RADB last-modified: 2023-11-13T15:58:36Z rpki-ov-state: valid route: 190.151.188.0/22 descr: COLUMBUS NETWORKS TRANSIT CUSTOMERS origin: AS27708 notify: ipservices [at] columbus.co mnt-by: MAINT-AS23520 changed: jtrespalacios [at] columbus.co 20160126 source: RADB last-modified: 2023-11-13T15:56:02Z rpki-ov-state: valid