These entries are queried from radb.net using whois, you can try my project getting these.
:AS131896 route: 103.198.108.0/24 origin: AS131896 descr: SSI Lab Inc mnt-by: MAINT-AS131896 changed: admin [at] ssilab.co.jp 20210120 #05:26:36Z source: RADB last-modified: 2023-11-13T16:03:24Z rpki-ov-state: valid route: 103.198.109.0/24 origin: AS131896 descr: SSI Lab Inc mnt-by: MAINT-AS131896 changed: admin [at] ssilab.co.jp 20210120 #05:27:22Z source: RADB last-modified: 2023-11-13T16:03:24Z rpki-ov-state: valid route: 103.198.110.0/24 origin: AS131896 descr: SSI Lab Inc mnt-by: MAINT-AS131896 changed: admin [at] ssilab.co.jp 20210120 #05:27:57Z source: RADB last-modified: 2023-11-13T16:03:24Z rpki-ov-state: valid route: 103.198.111.0/24 origin: AS131896 descr: SSI Lab Inc mnt-by: MAINT-AS131896 changed: admin [at] ssilab.co.jp 20210120 #05:28:28Z source: RADB last-modified: 2023-11-13T16:03:24Z rpki-ov-state: valid route: 103.239.16.0/23 descr: SSI Lab Inc origin: AS131896 mnt-by: MAINT-AS131896 changed: admin [at] ssilab.co.jp 20150209 #07:33:50Z source: RADB last-modified: 2023-11-13T15:47:06Z rpki-ov-state: valid route: 103.239.16.0/24 descr: SSI Lab Inc origin: AS131896 mnt-by: MAINT-AS131896 changed: admin [at] ssilab.co.jp 20170801 #11:48:15Z source: RADB last-modified: 2023-11-13T15:51:17Z rpki-ov-state: valid route: 103.239.17.0/24 origin: AS131896 descr: SSI Lab Inc mnt-by: MAINT-AS131896 changed: admin [at] ssilab.co.jp 20190402 #05:29:11Z source: RADB last-modified: 2023-11-13T15:55:46Z rpki-ov-state: valid route: 103.239.18.0/24 descr: SSI Lab Inc origin: AS131896 mnt-by: MAINT-AS131896 changed: admin [at] ssilab.co.jp 20150209 #07:38:19Z source: RADB last-modified: 2023-11-13T15:47:06Z rpki-ov-state: valid route: 103.239.19.0/24 descr: SSI Lab Inc origin: AS131896 mnt-by: MAINT-AS131896 changed: admin [at] ssilab.co.jp 20180417 #01:16:45Z source: RADB last-modified: 2023-11-13T15:53:25Z rpki-ov-state: valid