These entries are queried from radb.net using whois, you can try my project getting these.
:AS23631 route: 202.243.120.0/21 descr: Sofu System Co.,Ltd. origin: AS23631 notify: irr [at] sofu.co.jp mnt-by: MAINT-AS23631 changed: irr-admin [at] nic.ad.jp 20230509 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.243.120.0/21 descr: Sofu System Co.,Ltd. origin: AS23631 notify: irr [at] sofu.co.jp mnt-by: MAINT-AS18070 changed: operators [at] global-netcore.jp 20150728 #09:21:39Z source: RADB last-modified: 2023-11-13T15:48:02Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.236.208.0/20 descr: Sofu System Co.,Ltd. origin: AS23631 notify: irr [at] sofu.co.jp mnt-by: MAINT-AS23631 changed: irr [at] sofu.co.jp 20230509 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.236.208.0/20 descr: Sofu System Co.,Ltd. origin: AS23631 notify: irr [at] sofu.co.jp mnt-by: MAINT-AS18070 changed: operators [at] global-netcore.jp 20150728 #09:20:41Z source: RADB last-modified: 2023-11-13T15:48:02Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2402:b300::/32 descr: Sofu System Co.,Ltd. origin: AS23631 notify: irr [at] sofu.co.jp mnt-by: MAINT-AS23631 changed: irr [at] sofu.co.jp 20230509 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2402:b300::/32 descr: Sofu System Co.,Ltd. origin: AS23631 notify: irr [at] sofu.co.jp mnt-by: MAINT-AS18070 changed: operators [at] global-netcore.jp 20150728 #09:22:32Z source: RADB last-modified: 2023-11-13T15:48:02Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source