These entries are queried from radb.net using whois, you can try my project getting these.
:AS18472 route: 162.222.156.0/22 descr: Canadian Museum for Human Rights (CMHR) remarks: Modified by MRnet origin: AS18472 notify: ron [at] xena.ca mnt-by: MRNET-MB-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: 162.222.156.0/22 descr: Canadian Museum for Human Rights notify: routing [at] mtsallstream.com origin: AS18472 remarks: MTS-Allstream Customer mnt-by: MAINT-AS15290 changed: Sheily.Mali [at] mtsallstream.com 20131129 source: RADB last-modified: 2023-11-13T16:00:08Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:4e:4000::/48 descr: Canadian Museum of Human Rights origin: AS18472 mnt-by: MRNET-MB-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:4e:4000::/48 descr: MTS on behalf of Canadian Museum for Human Rights (CMHR) origin: AS18472 mnt-by: MAINT-AS684 changed: gao.feng [at] mts.ca 20160106 #21:18:06Z source: RADB last-modified: 2023-11-13T15:48:30Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source