These entries are queried from radb.net using whois, you can try my project getting these.
:AS9352 route: 210.233.160.0/19 descr: KuMaGaYaNet origin: AS9352 notify: taigo [at] knet.ad.jp mnt-by: MAINT-AS2519 changed: k.arita [at] vectant.co.jp 20040721 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.233.160.0/20 descr: KuMaGaYaNet origin: AS9352 notify: taigo [at] knet.ad.jp mnt-by: MAINT-AS2519 changed: y.ohta [at] vectant.co.jp 20040723 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.233.160.0/24 descr: KuMaGaYaNet origin: AS9352 notify: taigo [at] knet.ad.jp mnt-by: MAINT-AS2519 changed: noc [at] vectant.ad.jp 20170725 #01:27:06Z source: RADB last-modified: 2023-11-13T15:51:17Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.233.162.0/23 descr: KuMaGaYaNet origin: AS9352 notify: taigo [at] knet.ad.jp mnt-by: MAINT-AS2519 changed: noc [at] vectant.ad.jp 20170725 #01:27:43Z source: RADB last-modified: 2023-11-13T15:51:17Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.233.165.0/24 descr: KuMaGaYaNet origin: AS9352 notify: taigo [at] knet.ad.jp mnt-by: MAINT-AS2519 changed: noc [at] vectant.ad.jp 20170725 #01:28:28Z source: RADB last-modified: 2023-11-13T15:51:17Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.233.166.0/23 descr: KuMaGaYaNet origin: AS9352 notify: taigo [at] knet.ad.jp mnt-by: MAINT-AS2519 changed: noc [at] vectant.ad.jp 20170725 #01:33:47Z source: RADB last-modified: 2023-11-13T15:51:17Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.233.168.0/22 descr: KuMaGaYaNet origin: AS9352 notify: taigo [at] knet.ad.jp mnt-by: MAINT-AS2519 changed: noc [at] vectant.ad.jp 20170725 #01:29:00Z source: RADB last-modified: 2023-11-13T15:51:17Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.233.173.0/24 descr: KuMaGaYaNet origin: AS9352 notify: taigo [at] knet.ad.jp mnt-by: MAINT-AS2519 changed: noc [at] vectant.ad.jp 20170725 #01:30:34Z source: RADB last-modified: 2023-11-13T15:51:17Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.233.174.0/23 descr: KuMaGaYaNet origin: AS9352 notify: taigo [at] knet.ad.jp mnt-by: MAINT-AS2519 changed: noc [at] vectant.ad.jp 20170725 #01:25:38Z source: RADB last-modified: 2023-11-13T15:51:17Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.233.176.0/20 descr: KuMaGaYaNet origin: AS9352 mnt-by: MAINT-AS7684 changed: s-yamada [at] sakura.ad.jp 20100429 source: RADB last-modified: 2023-11-13T15:40:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.233.176.0/20 descr: KuMaGaYaNet origin: AS9352 notify: taigo [at] knet.ad.jp mnt-by: MAINT-AS2519 changed: y.ohta [at] vectant.co.jp 20040723 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.233.176.0/20 descr: KuMaGaYaNet origin: AS9352 mnt-by: MAINT-AS7684 changed: peer [at] sakura.ad.jp 20230701 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source