These entries are queried from radb.net using whois, you can try my project getting these.
:AS19925 route: 142.76.0.0/16 descr: Sunnybrook and Women's College Health Sciences Centre origin: AS19925 notify: shahid.ajaz [at] orano.on.ca mnt-by: ORANO-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 142.76.0.0/16 descr: AS19925 proxy-registered route by Cogent origin: AS19925 remarks: Proxy-registered route object remarks: for Cogent customer notify: neteng [at] cogentco.com mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20031230 source: RADB last-modified: 2023-11-13T15:39:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 142.76.0.0/17 descr: Sunnybrook Health Sciences Centre origin: AS19925 notify: eric.guo [at] orion.on.ca mnt-by: ORANO-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 142.76.128.0/17 descr: Sunnybrook Health Sciences Centre origin: AS19925 notify: eric.guo [at] orion.on.ca mnt-by: ORANO-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source