These entries are queried from radb.net using whois, you can try my project getting these.
:AS59121 route: 138.212.0.0/17 descr: Asahi Kasei Networks Corporation origin: AS59121 notify: gw.odn.ad.jp">as-admin [at] gw.odn.ad.jp mnt-by: MAINT-AS4725 changed: gw.odn.ad.jp">as-admin [at] gw.odn.ad.jp 20240311 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 138.212.0.0/17 descr: Asahi Kasei Networks Corporation origin: AS59121 notify: gw.odn.ad.jp">as-admin [at] gw.odn.ad.jp mnt-by: MAINT-AS4722 changed: gw.odn.ad.jp">as-admin [at] gw.odn.ad.jp 20160516 source: RADB last-modified: 2023-11-13T15:49:08Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 138.212.110.0/24 descr: Asahi Kasei Networks Corporation origin: AS59121 notify: gw.odn.ad.jp">as-admin [at] gw.odn.ad.jp mnt-by: MAINT-AS4725 changed: gw.odn.ad.jp">as-admin [at] gw.odn.ad.jp 20230710 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 138.212.110.0/24 descr: Asahi Kasei Networks Corporation origin: AS59121 notify: gw.odn.ad.jp">as-admin [at] gw.odn.ad.jp mnt-by: MAINT-AS4722 changed: gw.odn.ad.jp">as-admin [at] gw.odn.ad.jp 20170920 source: RADB last-modified: 2023-11-13T15:51:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.11.64.0/24 descr: Asahi Kasei Networks Corporation origin: AS59121 mnt-by: MAINT-AS4725 changed: gw.odn.ad.jp">as-admin [at] gw.odn.ad.jp 20240311 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.11.64.0/24 descr: Asahi Kasei Networks Corporation origin: AS59121 mnt-by: MAINT-AS4722 changed: gw.odn.ad.jp">as-admin [at] gw.odn.ad.jp 20160616 source: RADB last-modified: 2023-11-13T15:49:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source