These entries are queried from radb.net using whois, you can try my project getting these.
:AS18149 route: 103.47.2.0/24 descr: JPRS-TLD-NET origin: AS18149 notify: tech-admin [at] jprs.co.jp 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 route: 103.47.2.0/24 descr: JPRS-TLD-NET origin: AS18149 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: 202.11.16.0/23 descr: JPRS origin: AS18149 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 route: 202.11.16.0/23 descr: Japan Registry Services Co., Ltd. origin: AS18149 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: 203.208.23.0/24 descr: Japan Registry Services Co., Ltd. origin: AS18149 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: 203.208.23.0/24 descr: JPRS origin: AS18149 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: proxy route6 registration by AS2914 origin: AS18149 admin-c: NCGE-VRIO tech-c: NCGE-VRIO remarks: Abuse / UCE reports abuse [at] ntt.net remarks: Security issues security [at] ntt.net remarks: SWIP issues ce-ipadmin [at] us.ntt.net notify: tech [at] ntt.net mnt-by: MAINT-NTTCOM-BB changed: fukamori [at] ntt.net 20100611 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:dda::/48 descr: JPRS-TLD-NET origin: AS18149 notify: tech-admin [at] jprs.co.jp 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:dda::/48 descr: JPRS-TLD-NET origin: AS18149 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 route6: 2001:df0:8::/48 descr: Japan Registry Services Co., Ltd. origin: AS18149 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 route6: 2001:df0:8::/48 descr: JPRS remarks: JPRS PI origin: AS18149 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