These entries are queried from radb.net using whois, you can try my project getting these.
:AS16866 route: 162.250.12.0/22 descr: Columbia Networks origin: AS16866 mnt-by: MAINT-AS16866 changed: admincn [at] columbianetworks.ca 20131212 #04:41:43Z source: RADB last-modified: 2023-11-13T15:45:55Z rpki-ov-state: valid route: 162.250.12.0/24 descr: Columbia Networks origin: AS16866 mnt-by: MAINT-AS16866 changed: admincn [at] columbianetworks.ca 20131212 #04:43:05Z source: RADB last-modified: 2023-11-13T15:45:55Z rpki-ov-state: valid route: 162.250.13.0/24 descr: Columbia Networks origin: AS16866 mnt-by: MAINT-AS16866 changed: admincn [at] columbianetworks.ca 20131212 #04:44:05Z source: RADB last-modified: 2023-11-13T15:45:55Z rpki-ov-state: valid route: 162.250.14.0/24 descr: Columbia Networks origin: AS16866 mnt-by: MAINT-AS16866 changed: admincn [at] columbianetworks.ca 20131212 #04:45:02Z source: RADB last-modified: 2023-11-13T15:45:55Z rpki-ov-state: valid route: 162.250.15.0/24 descr: Columbia Networks origin: AS16866 mnt-by: MAINT-AS16866 changed: admincn [at] columbianetworks.ca 20131212 #04:46:01Z source: RADB last-modified: 2023-11-13T15:45:55Z rpki-ov-state: valid route6: 2607:f990::/32 descr: Columbia Networks origin: AS16866 mnt-by: MAINT-AS16866 changed: admintn [at] trailnetworks.com 20111117 #07:11:12Z source: RADB last-modified: 2023-11-13T15:41:54Z rpki-ov-state: valid