These entries are queried from radb.net using whois, you can try my project getting these.
:AS2523 route: 133.69.0.0/16 descr: ITRC X-Keiro: noc [at] net.ist.i.kyoto-u.ac.jp origin: AS2523 notify: noc [at] net.ist.i.kyoto-u.ac.jp mnt-by: MAINT-AS2523 changed: kotani [at] media.kyoto-u.ac.jp 20230701 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 133.69.0.0/20 descr: ITRC X-Keiro: noc [at] net.ist.i.kyoto-u.ac.jp origin: AS2523 notify: noc [at] net.ist.i.kyoto-u.ac.jp mnt-by: MAINT-AS2523 changed: kotani [at] media.kyoto-u.ac.jp 20230701 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 133.69.16.0/20 descr: ITRC X-Keiro: reo [at] cmc.osaka-u.ac.jp origin: AS2523 notify: reo [at] cmc.osaka-u.ac.jp mnt-by: MAINT-AS2523 changed: kotani [at] media.kyoto-u.ac.jp 20230701 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 133.69.80.0/20 descr: ITRC X-Keiro: ohmori [at] tottori-u.ac.jp origin: AS2523 notify: ohmori [at] tottori-u.ac.jp mnt-by: MAINT-AS2523 changed: kotani [at] media.kyoto-u.ac.jp 20230701 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 133.69.128.0/19 descr: ITRC X-Keiro: oka [at] ec.kyushu-u.ac.jp, ohmori [at] tottori-u.ac.jp, toshi [at] is.kyusan-u.ac.jp origin: AS2523 notify: oka [at] ec.kyushu-u.ac.jp notify: ohmori [at] tottori-u.ac.jp notify: toshi [at] is.kyusan-u.ac.jp mnt-by: MAINT-AS2523 changed: kotani [at] media.kyoto-u.ac.jp 20230701 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 133.69.128.0/20 descr: ITRC X-Keiro: oka [at] ec.kyushu-u.ac.jp, ohmori [at] tottori-u.ac.jp, toshi [at] is.kyusan-u.ac.jp origin: AS2523 notify: oka [at] ec.kyushu-u.ac.jp notify: ohmori [at] tottori-u.ac.jp notify: toshi [at] is.kyusan-u.ac.jp mnt-by: MAINT-AS2523 changed: kotani [at] media.kyoto-u.ac.jp 20230701 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 133.69.154.0/24 descr: ITRC X-Keiro: oka [at] ec.kyushu-u.ac.jp, ohmori [at] tottori-u.ac.jp, toshi [at] is.kyusan-u.ac.jp origin: AS2523 notify: oka [at] ec.kyushu-u.ac.jp notify: ohmori [at] tottori-u.ac.jp notify: toshi [at] is.kyusan-u.ac.jp mnt-by: MAINT-AS2523 changed: kotani [at] media.kyoto-u.ac.jp 20230701 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 133.69.192.0/20 descr: ITRC X-Keiro: takakura [at] nii.ac.jp origin: AS2523 notify: takakura [at] nii.ac.jp mnt-by: MAINT-AS2523 changed: kotani [at] media.kyoto-u.ac.jp 20230701 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2407:e0c0::/32 descr: ITRC X-Keiro: noc [at] net.ist.i.kyoto-u.ac.jp origin: AS2523 notify: noc [at] net.ist.i.kyoto-u.ac.jp mnt-by: MAINT-AS2523 changed: kotani [at] media.kyoto-u.ac.jp 20230611 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2407:e0c0:101::/48 descr: ITRC X-Keiro: noc [at] net.ist.i.kyoto-u.ac.jp origin: AS2523 notify: noc [at] net.ist.i.kyoto-u.ac.jp mnt-by: MAINT-AS2523 changed: kotani [at] media.kyoto-u.ac.jp 20230611 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source