These entries are queried from radb.net using whois, you can try my project getting these.
:AS55387 route: 27.253.128.0/17 descr: AS-RMGR origin: AS55387 notify: NOC-INFO [at] tokai-grp.co.jp mnt-by: MAINT-AS10010 changed: NOC-INFO [at] tokai-grp.co.jp 20240124 source: RADB last-modified: 2024-01-24T08:08:31Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 27.253.128.0/17 descr: AS-RMGR origin: AS55387 notify: NOC-INFO [at] tokai-grp.co.jp mnt-by: MAINT-AS10010 changed: NOC-INFO [at] tokai-grp.co.jp 20240124 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.25.128.0/18 descr: IIJ Customer route origin: AS55387 mnt-by: MAINT-AS2497 changed: shuhei-o [at] iij.ad.jp 20231215 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.25.128.0/18 descr: IIJ Customer route origin: AS55387 mnt-by: MAINT-AS2497 changed: yutaka-i [at] iij.ad.jp 20120911 source: RADB last-modified: 2023-11-13T15:43:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source