These entries are queried from radb.net using whois, you can try my project getting these.
:AS131895 route: 103.226.54.0/24 descr: OIST (Okinawa Institute of Science and Technology) IPV4 address origin: AS131895 tech-c: Udaya Sankar Palani notify: it-network [at] oist.jp mnt-by: MAINT-AS131895 changed: it-network [at] oist.jp 20160707 #23:26:38Z source: RADB last-modified: 2023-11-13T15:49:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.226.54.0/24 descr: Customer-OIST origin: AS131895 notify: noc [at] glbb.ne.jp mnt-by: MAINT-AS55900 changed: ipkanri [at] glbb.ne.jp 20170930 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.226.54.0/24 descr: Okinawa Institute of Science and Technology Graduate University X-Keiro: it-ops-network [at] oist.jp origin: AS131895 notify: it-ops-network [at] oist.jp mnt-by: MAINT-AS131895 changed: it-ops-network [at] oist.jp 20240301 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:df2:d800::/48 descr: Okinawa Institute of Science and Technology Graduate University= IPv6 address X-Keiro: it-ops-network [at] oist.jp origin: AS131895 notify: it-ops-network [at] oist.jp mnt-by: MAINT-AS131895 changed: it-ops-network [at] oist.jp 20240301 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:df2:d800::/48 descr: OIST (Okinawa Institute of Science and Technology) IPV6 address origin: AS131895 tech-c: Udaya Sankar Palani notify: it-network [at] oist.jp mnt-by: MAINT-AS131895 changed: it-network [at] oist.jp 20160707 #23:26:01Z source: RADB last-modified: 2023-11-13T15:49:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source