These entries are queried from radb.net using whois, you can try my project getting these.
:AS53403 route: 142.109.0.0/16 descr: NET-MTROYAL Mount Royal University remarks: (added by Shaw on behalf of customer) origin: AS53403 notify: ipadmin [at] sjrb.ca notify: ipadmin-sbs [at] sjrb.ca mnt-by: MAINT-AS6327 changed: ipadmin-sbs [at] sjrb.ca 20040419 source: RADB last-modified: 2024-03-05T21:00:07Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 142.109.0.0/16 descr: Mount Royal University origin: AS53403 mnt-by: CYBERA-AB-MNT created: 2023-06-14T17:09:54Z last-modified: 2023-11-08T21:25:29Z source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 142.109.127.0/24 descr: Mount Royal University origin: AS53403 mnt-by: CYBERA-AB-MNT created: 2023-11-08T21:25:29Z last-modified: 2023-11-08T21:25:29Z source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source