These entries are queried from radb.net using whois, you can try my project getting these.
:AS131915 route: 103.90.164.0/22 descr: Hamamatsu Cable Television .Inc origin: AS131915 notify: NOC-INFO [at] tokai-grp.co.jp mnt-by: MAINT-AS10010 changed: NOC-INFO [at] tokai-grp.co.jp 20240124 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.90.164.0/22 descr: Hamamatsu Cable Television .Inc origin: AS131915 notify: NOC-INFO [at] tokai-grp.co.jp mnt-by: MAINT-AS10010 changed: NOC-INFO [at] tokai-grp.co.jp 20240124 source: RADB last-modified: 2024-01-24T08:08:31Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 133.186.16.0/21 descr: Hamamatsu Cable Television .Inc origin: AS131915 notify: gijutsu [at] hctnet.ne.jp mnt-by: MAINT-AS10010 changed: NOC-INFO [at] tokai-grp.co.jp 20230919 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 133.186.16.0/21 descr: Hamamatsu Cable Television .Inc origin: AS131915 notify: gijutsu [at] hctnet.ne.jp mnt-by: MAINT-AS10010 changed: NOC-INFO [at] tokai-grp.co.jp 20230918 source: RADB last-modified: 2023-11-13T16:18:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 133.186.24.0/21 descr: Hamamatsu Cable Television .Inc origin: AS131915 notify: gijutsu [at] hctnet.ne.jp mnt-by: MAINT-AS10010 changed: NOC-INFO [at] tokai-grp.co.jp 20230510 source: RADB last-modified: 2023-11-13T16:17:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 133.186.24.0/21 descr: Hamamatsu Cable Television .Inc origin: AS131915 notify: gijutsu [at] hctnet.ne.jp mnt-by: MAINT-AS10010 changed: NOC-INFO [at] tokai-grp.co.jp 20230511 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 133.186.64.0/18 descr: Hamamatsu Cable Television .Inc origin: AS131915 notify: NOC-INFO [at] tokai-grp.co.jp mnt-by: MAINT-AS10010 changed: NOC-INFO [at] tokai-grp.co.jp 20230510 source: RADB last-modified: 2023-11-13T16:17:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 133.186.64.0/18 descr: Hamamatsu Cable Television .Inc origin: AS131915 notify: NOC-INFO [at] tokai-grp.co.jp mnt-by: MAINT-AS10010 changed: NOC-INFO [at] tokai-grp.co.jp 20230511 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 219.100.244.0/22 descr: Hamamatsu Cable Television .Inc origin: AS131915 notify: NOC-INFO [at] tokai-grp.co.jp mnt-by: MAINT-AS10010 changed: NOC-INFO [at] tokai-grp.co.jp 20240124 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 219.100.244.0/22 descr: Hamamatsu Cable Television .Inc origin: AS131915 notify: NOC-INFO [at] tokai-grp.co.jp mnt-by: MAINT-AS10010 changed: NOC-INFO [at] tokai-grp.co.jp 20240124 source: RADB last-modified: 2024-01-24T08:08:31Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source