These entries are queried from radb.net using whois, you can try my project getting these.
:AS21671 route: 142.16.22.0/24 descr: MBHYDRO Manitoba Hydro remarks: (scripted addition on behalf of customer by Shaw) origin: AS21671 notify: ipadmin [at] sjrb.ca notify: ipadmin_bigpipe [at] bigpipeinc.com mnt-by: MAINT-AS6327 changed: ipadmin_bigpipe [at] bigpipeinc.com 20030930 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: 142.16.22.0/24 origin: AS21671 descr: MNT-MANITO-1 route 142.016.022.000/24 AS21671 admin-c: WITZK-ARIN tech-c: SHARM153-ARIN tech-c: WITZK-ARIN mnt-by: MNT-MANITO-1 created: 2020-07-08T17:58:14Z last-modified: 2023-05-09T15:00:02Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 142.16.66.0/24 origin: AS21671 descr: MNT-MANITO-1 route 142.016.066.000/24 AS21671 admin-c: WITZK-ARIN tech-c: SHARM153-ARIN tech-c: WITZK-ARIN mnt-by: MNT-MANITO-1 created: 2020-07-07T17:58:54Z last-modified: 2023-05-09T15:00:02Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source