These entries are queried from radb.net using whois, you can try my project getting these.
:AS18125 route: 150.26.0.0/16 descr: Ministry of Agriculture,Forestry and Fisheries Agriculture,Forestry and Fisheries Research Council Kannondai 2-1-9 Tsukuba Ibaraki 305-8601 JAPAN X-Keiro: ops [at] maffin.ad.jp origin: AS18125 notify: ops [at] maffin.ad.jp mnt-by: MAINT-AS18125 changed: ops [at] maffin.ad.jp 20231002 source: JPIRR rpki-ov-state: valid route: 150.26.0.0/16 descr: Ministry of Agriculture Forestry and Fisheries Research Council Kannon-dai 2-1-2 Tsukuba-shi Ibaraki, 305 JAPAN origin: AS18125 mnt-by: MAINT-AS18125 changed: nagahama [at] maffin.ad.jp 20031016 source: RADB last-modified: 2023-11-13T16:19:20Z rpki-ov-state: valid route: 166.119.0.0/16 descr: Ministry of Agriculture, Forestry and Fisheries 1-2-1, Kasumigaseki Chiyoda-ku Tokyo 100 JAPAN origin: AS18125 mnt-by: MAINT-AS18125 changed: nagahama [at] maffin.ad.jp 20031016 source: RADB last-modified: 2023-11-13T16:19:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2401:ad00::/32 descr: Ministry of Agriculture,Forestry and Fisheries Agriculture,Forestry and Fisheries Research Council Kannondai 2-1-9 Tsukuba Ibaraki 305-8601 JAPAN X-Keiro: ops [at] maffin.ad.jp origin: AS18125 notify: ops [at] maffin.ad.jp mnt-by: MAINT-AS18125 changed: ops [at] maffin.ad.jp 20231002 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2401:ad00::/32 descr: Ministry of Agriculture Forestry and Fisheries Research Council Kannon-dai 2-1-2 Tsukuba-shi Ibaraki, 305 JAPAN origin: AS18125 mnt-by: MAINT-AS18125 changed: tahara [at] maffin.ad.jp 20120608 source: RADB last-modified: 2023-11-13T16:19:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source