These entries are queried from radb.net using whois, you can try my project getting these.
:AS17523 route: 133.2.0.0/16 descr: Aoyama Gakuin University origin: AS17523 notify: haga [at] agnoc.aoyama.ac.jp mnt-by: MAINT-AS17523 changed: masuzawa [at] ntt.ocn.ne.jp 20010329 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 133.2.0.0/16 descr: Aoyama Gakuin University X-Keiro: agnoc [at] aoyama.ac.jp origin: AS17523 notify: agnoc [at] aoyama.ac.jp mnt-by: MAINT-AS17523 changed: nkato [at] aoyamagakuin.jp 20230508 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 133.2.0.0/16 descr: PNAP-TOK aogakujp-1 origin: AS17523 mnt-by: MAINT-AS1828 changed: ahara [at] internap.com 20070723 source: RADB last-modified: 2023-11-13T16:14:12Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 133.2.0.0/17 descr: Aoyama Gakuin University X-Keiro: agnoc [at] aoyama.ac.jp origin: AS17523 notify: agnoc [at] aoyama.ac.jp mnt-by: MAINT-AS17523 changed: nkato [at] aoyamagakuin.jp 20230508 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 133.2.128.0/17 descr: Aoyama Gakuin University X-Keiro: agnoc [at] aoyama.ac.jp origin: AS17523 notify: agnoc [at] aoyama.ac.jp mnt-by: MAINT-AS17523 changed: nkato [at] aoyamagakuin.jp 20230508 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:df7:7800::/48 descr: Aoyama Gakuin University origin: AS17523 mnt-by: MAINT-AS2907 changed: as2907 [at] sinet.ad.jp 20231201 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source