These entries are queried from radb.net using whois, you can try my project getting these.
:AS27275 route: 198.161.28.0/22 descr: NET-198-161-28-0-1 origin: AS27275 remarks: Proxy route on behalf of The Banff Centre for Continuing Education mnt-by: MAINT-AS852 notify: backbone [at] telus.com changed: abuse [at] telus.com 20200611 source: RADB last-modified: 2023-11-13T16:00:58Z rpki-ov-state: valid route: 198.161.28.0/22 descr: Banff origin: AS27275 mnt-by: CYBERA-AB-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: valid