These entries are queried from radb.net using whois, you can try my project getting these.
:AS397023 route: 141.193.254.0/24 descr: NET-141-193-254-0-1 origin: AS397023 remarks: Proxy route on behalf of Canadian Shield Data Center Inc mnt-by: MAINT-AS852 notify: backbone [at] telus.com changed: abuse [at] telus.com 20200114 source: RADB last-modified: 2023-11-13T15:59:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 162.223.120.0/24 descr: NET-162-223-120-0-1 origin: AS397023 remarks: Proxy route on behalf of SilverServers Inc. mnt-by: MAINT-AS852 notify: backbone [at] telus.com changed: abuse [at] telus.com 20191202 source: RADB last-modified: 2023-11-13T15:59:14Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:fedd:1::/48 descr: NET6-2602-FEDD-1 origin: AS397023 remarks: Proxy route on behalf of SilverServers Inc. mnt-by: MAINT-AS852 notify: backbone [at] telus.com changed: abuse [at] telus.com 20200503 source: RADB last-modified: 2023-11-13T16:00:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source