These entries are queried from radb.net using whois, you can try my project getting these.
:AS54835 route: 23.136.112.0/24 descr: COLUMBUS NETWORKS TRANSIT CUSTOMERS origin: AS54835 notify: ipservices [at] columbus.co mnt-by: MAINT-AS23520 changed: rafael.espinosa [at] cwc.com 20190723 source: RADB last-modified: 2023-11-13T15:56:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:fddc::/36 descr: COLUMBUS NETWORKS TRANSIT CUSTOMERS origin: AS54835 notify: ipservices [at] columbus.co mnt-by: MAINT-AS23520 changed: rafael.espinosa [at] cwc.com 20190719 source: RADB last-modified: 2023-11-13T15:56:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source