These entries are queried from radb.net using whois, you can try my project getting these.
:AS4718 route: 210.156.0.0/22 descr: CKP-NET IPv4 Address-block No.1 X-Keiro: infra [at] ckp.jp origin: AS4718 notify: infra [at] ckp.jp mnt-by: MAINT-AS4718 changed: kawamoto [at] ckp.jp 20230403 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:da0::/32 descr: CKP-NET IPv6 Address-block No.1 X-Keiro: infra [at] ckp.jp origin: AS4718 notify: infra [at] ckp.jp mnt-by: MAINT-AS4718 changed: kawamoto [at] ckp.jp 20230403 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source