These entries are queried from radb.net using whois, you can try my project getting these.
:AS16475 route: 139.57.0.0/16 descr: Brock University Prefix origin: AS16475 notify: shiva.raj [at] orion.on.ca mnt-by: ORANO-MNT created: 2021-07-30T13:50:03Z last-modified: 2021-07-30T13:50:03Z source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 139.57.0.0/17 descr: Brock University Prefix, Needed for HurricaneElectric to accept Brock /17 blocks origin: AS16475 notify: shiva.raj [at] orion.on.ca mnt-by: ORANO-MNT created: 2021-09-01T18:19:09Z last-modified: 2021-09-01T18:31:16Z source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 139.57.128.0/17 descr: Brock University Prefix, Needed for HurricaneElectric to accept Brock /17 blocks origin: AS16475 notify: shiva.raj [at] orion.on.ca mnt-by: ORANO-MNT created: 2021-09-01T18:21:18Z last-modified: 2021-09-01T18:31:46Z source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source