These entries are queried from radb.net using whois, you can try my project getting these.
:AS17957 route: 49.236.232.0/21 descr: Cable Television Shinagawa inc. origin: AS17957 mnt-by: MAINT-AS9365 changed: peering [at] itscom.ad.jp 20231002 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 110.232.236.0/22 descr: Cable Television Shinagawa inc. origin: AS17957 mnt-by: MAINT-AS9365 changed: peering [at] itscom.ad.jp 20231002 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 115.165.184.0/21 descr: Cable Television Shinagawa inc. origin: AS17957 mnt-by: MAINT-AS9365 changed: peering [at] itscom.ad.jp 20231002 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.122.24.0/21 descr: Cable Television Shinagawa inc. origin: AS17957 mnt-by: MAINT-AS9365 changed: peering [at] itscom.ad.jp 20231002 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.191.128.0/19 descr: Cable Television Shinagawa inc. origin: AS17957 mnt-by: MAINT-AS9365 changed: peering [at] itscom.ad.jp 20231002 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 219.103.96.0/20 descr: Cable Television Shinagawa inc. origin: AS17957 mnt-by: MAINT-AS9365 changed: peering [at] itscom.ad.jp 20231002 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source