These entries are queried from radb.net using whois, you can try my project getting these.
:AS18127 route: 144.213.0.0/16 descr: National Institute for Materials Science 1-2-1, Sengen Tsukuba-shi Ibaraki 305-0047 JAPAN origin: AS18127 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 route: 150.18.0.0/16 descr: National Institute of Advanced Industrial Science and Technology 1-1-1 Higashi Tsukuba-shi, Ibaraki 305-8561, JAPAN origin: AS18127 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 route: 150.29.0.0/16 descr: National Institute of Advanced Industrial Science and Technology 1-1-1 Higashi Tsukuba-shi, Ibaraki 305-8561, JAPAN origin: AS18127 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 route: 150.82.0.0/16 descr: National Institute of Advanced Industrial Science and Technology 1-1-1 Higashi Tsukuba-shi, Ibaraki 305-8561, JAPAN origin: AS18127 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 route: 158.203.0.0/16 descr: National Research Institute for Earth Science and Disaster Prevention 3-1 Tennodai Tsukuba-shi, Ibaraki 305, JAPAN origin: AS18127 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 route: 163.42.0.0/16 descr: Geographical Survey Institute, Ministry of Construction 1 Kitasato Tsukuba-shi, Ibaraki 305, JAPAN origin: AS18127 mnt-by: MAINT-AS18125 changed: kuramochi [at] maffin.ad.jp 20050705 source: RADB last-modified: 2023-11-13T16:19:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 163.220.0.0/16 descr: Tsukuba-WAN Network origin: AS18127 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 route: 163.220.0.0/18 descr: National Institute of Advanced Industrial Science and Technology origin: AS18127 mnt-by: MAINT-AS18125 changed: nagahama [at] maffin.ad.jp 20031030 source: RADB last-modified: 2023-11-13T16:19:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 163.220.109.0/24 descr: National Institute of Advanced Industrial Science and Technology origin: AS18127 mnt-by: MAINT-AS18125 changed: nagahama [at] maffin.ad.jp 20031030 source: RADB last-modified: 2023-11-13T16:19:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.31.198.0/23 descr: Electrotechnical Laboratory 1-1-4 Umezono Tsukuba-shi, Ibaraki 305-8568, JAPAN origin: AS18127 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 route: 192.31.200.0/22 descr: Electrotechnical Laboratory 1-1-4 Umezono Tsukuba-shi, Ibaraki 305-8568, JAPAN origin: AS18127 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 route: 192.31.204.0/23 descr: Electrotechnical Laboratory 1-1-4 Umezono Tsukuba-shi, Ibaraki 305-8568, JAPAN origin: AS18127 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 route: 192.31.206.0/24 descr: Electrotechnical Laboratory 1-1-4 Umezono Tsukuba-shi, Ibaraki 305-8568, JAPAN origin: AS18127 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 route: 192.33.135.0/24 descr: Electrotechnical Laboratory 1-1-4 Umezono Tsukuba-shi, Ibakaki 305, JAPAN origin: AS18127 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 route: 192.50.73.0/24 descr: Electrotechnical Laboratory 1-1-4 Umezono Tsukuba-shi, Ibakaki 305, JAPAN origin: AS18127 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 route: 192.50.74.0/23 descr: National Institute of Advanced Industrial Science and Technology AIST Tsukuba Central 2 1-1-1 Umezono Tsukuba-shi, Ibaraki 305-8568, JAPAN origin: AS18127 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 route: 192.218.230.0/23 descr: Ministry of International Trade and Industry Agency of Industrial Science and Technology 1-1-4 Umezono Tsukuba-shi, Ibaraki 305, JAPAN origin: AS18127 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 route: 192.244.28.0/24 descr: Ministry of International Trade and Industry Agency of Industrial Science and Technology 1-1-4 Umezono Tsukuba-shi, Ibaraki 305, JAPAN origin: AS18127 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 route: 192.244.253.0/24 descr: Tsukuba Center for Institutes, STA 2-2-1, Kasumigasaki Chiyoda-ku Tokyo 100-8966 JAPAN origin: AS18127 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 route: 219.112.225.0/24 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 219.112.226.0/24 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 219.112.228.0/22 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 219.112.228.0/23 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 219.112.228.0/24 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 219.112.229.0/24 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 219.112.230.0/23 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 219.112.230.0/24 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 219.112.231.0/24 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 219.112.232.0/21 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 219.112.232.0/22 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 219.112.232.0/24 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 219.112.233.0/24 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 219.112.234.0/24 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 219.112.235.0/24 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 219.112.236.0/22 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 219.112.236.0/24 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 219.112.237.0/24 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 219.112.238.0/24 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 219.112.239.0/24 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2404:e480::/32 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2404:e480::/33 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2404:e480:8000::/33 descr: Ibaraki Prefecture X-Keiro : senotice [at] gmail.com origin: AS18127 notify: senotice [at] gmail.com mnt-by: MAINT-AS59103 changed: senotice [at] gmail.com 20240327 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source