These entries are queried from radb.net using whois, you can try my project getting these.
:AS38658 route: 203.191.4.0/24 descr: LIQUIDNET-AP Liquidnet Asia-Tokyo Network Operations Non-Transit Network - Financial Service Provider Tokyo,Japan origin: AS38658 notify: peer [at] sakura.ad.jp mnt-by: MAINT-AS7684 changed: peer [at] sakura.ad.jp 20230401 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.191.4.0/24 descr: LIQUIDNET origin: AS38658 notify: rr-mntner [at] idc.jp mnt-by: IDC changed: rr-mntner [at] idc.jp 20230308 source: RADB last-modified: 2023-11-13T16:15:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.131.37.0/24 descr: LIQUIDNET-AP Liquidnet Asia-Tokyo Network Operations Non-Transit Network - Financial Service Provider Tokyo,Japan origin: AS38658 notify: peer [at] sakura.ad.jp mnt-by: MAINT-AS7684 changed: peer [at] sakura.ad.jp 20230401 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source