These entries are queried from radb.net using whois, you can try my project getting these.
:AS23774 route: 203.119.1.0/24 descr: A-DNS-JP remarks: a.dns.jp anycast prefix origin: AS23774 notify: tech-admin [at] jprs.co.jp mnt-by: MAINT-AS18149 changed: tech-admin [at] jprs.co.jp 20151104 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.119.1.0/24 descr: A-DNS-JP remarks: a.dns.jp anycast prefix origin: AS23774 mnt-by: MAINT-AS18149 changed: tech-admin [at] jprs.co.jp 20240209 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:dc4::/32 descr: A-DNS-JP remarks: a.dns.jp anycast prefix origin: AS23774 mnt-by: MAINT-AS18149 changed: tech-admin [at] jprs.co.jp 20240209 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:dc4::/32 descr: A-DNS-JP origin: AS23774 mnt-by: MAINT-AS18149 changed: tech-admin [at] jprs.co.jp 20151104 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source