These entries are queried from radb.net using whois, you can try my project getting these.
:AS131951 route: 133.88.31.0/24 descr: Suzuyo Shinwart Corporation origin: AS131951 notify: ss-eng [at] shinwart.co.jp mnt-by: MAINT-AS18068 changed: myabe [at] shinwart.co.jp 20240201 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 133.88.31.0/24 origin: AS131951 descr: Suzuyo notify: noc [at] glbb.ne.jp mnt-by: MAINT-AS55900 changed: ipkanri [at] glbb.ne.jp 20190827 #08:23:41Z source: RADB last-modified: 2023-11-13T15:57:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2405:25c0:a100::/40 descr: Suzuyo Shinwart Corporation origin: AS131951 notify: ss-eng [at] shinwart.co.jp mnt-by: MAINT-AS18068 changed: myabe [at] shinwart.co.jp 20240201 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2405:25c0:a100::/40 origin: AS131951 descr: Suzuyo IPv6 Ginoza notify: noc [at] glbb.jp mnt-by: MAINT-AS55900 changed: ipkanri [at] glbb.ne.jp 20190827 #08:07:10Z source: RADB last-modified: 2023-11-13T15:57:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source