These entries are queried from radb.net using whois, you can try my project getting these.
:AS55396 route: 192.50.151.0/24 descr: FNCLAB-NET (AS55396) 1-7 Kinkou-cho, Kanagawa-ku, Yokohama 221-0056, Japan X-Keiro: noc [at] index.or.jp origin: AS55396 notify: noc [at] index.or.jp mnt-by: MAINT-AS55396 changed: noc [at] index.or.jp 20240201 source: JPIRR rpki-ov-state: valid route: 192.50.152.0/24 descr: FNCLAB-NET (AS55396) 1-7 Kinkou-cho, Kanagawa-ku, Yokohama 221-0056, Japan X-Keiro: noc [at] index.or.jp origin: AS55396 notify: noc [at] index.or.jp mnt-by: MAINT-AS55396 changed: noc [at] index.or.jp 20240201 source: JPIRR rpki-ov-state: valid route: 192.50.153.0/24 descr: FNCLAB-NET (AS55396) 1-7 Kinkou-cho, Kanagawa-ku, Yokohama 221-0056, Japan X-Keiro: noc [at] index.or.jp origin: AS55396 notify: noc [at] index.or.jp mnt-by: MAINT-AS55396 changed: noc [at] index.or.jp 20240201 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:df0:21e::/48 descr: FNCLAB-NET (AS55396) 1-7 Kinkou-cho, Kanagawa-ku, Yokohama 221-0056, Japan X-Keiro: noc [at] index.or.jp origin: AS55396 notify: noc [at] index.or.jp mnt-by: MAINT-AS55396 changed: noc [at] index.or.jp 20240201 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source