These entries are queried from radb.net using whois, you can try my project getting these.
:AS131944 route: 103.115.217.0/24 descr: KADOKAWA DWANGO CORPORATION X-Keiro:2525noc-ext [at] dwango.co.jp origin: AS131944 notify: 2525noc-ext [at] dwango.co.jp mnt-by: MAINT-AS131944 changed: abe-sho [at] kadokawa.jp 20230414 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.115.218.0/24 descr: KADOKAWA DWANGO CORPORATION X-Keiro:2525noc-ext [at] dwango.co.jp origin: AS131944 notify: 2525noc-ext [at] dwango.co.jp mnt-by: MAINT-AS131944 changed: abe-sho [at] kadokawa.jp 20230414 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.115.219.0/24 descr: KADOKAWA DWANGO CORPORATION X-Keiro:2525noc-ext [at] dwango.co.jp origin: AS131944 notify: 2525noc-ext [at] dwango.co.jp mnt-by: MAINT-AS131944 changed: abe-sho [at] kadokawa.jp 20230414 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source