These entries are queried from radb.net using whois, you can try my project getting these.
:AS17680 route: 61.213.48.0/20 descr: SCSK Corporation expire=24 origin: AS17680 mnt-by: MAINT-AS7684 changed: peer [at] sakura.ad.jp 20130515 source: RADB last-modified: 2023-11-13T15:45:25Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 61.213.48.0/20 descr: Temporary registered route object for customer of AS2914 origin: AS17680 notify: tech [at] ntt.net mnt-by: MAINT-NTTCOM-BB changed: takata [at] ntt.net 20050322 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 61.213.48.0/20 descr: SCSK Corporation expire=24 origin: AS17680 notify: nic [at] cc2.netxdc.com mnt-by: MAINT-AS17680 changed: masat.tanaka [at] scsk.jp 20230511 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 110.50.24.0/21 descr: Sumisho Computer Systems Corporation expire=24 origin: AS17680 mnt-by: MAINT-AS7684 changed: peer [at] sakura.ad.jp 20130515 source: RADB last-modified: 2023-11-13T15:45:25Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 110.50.24.0/21 descr: SCSK Corporation expire=24 X-Keiro: nic [at] cc2.netxdc.com origin: AS17680 notify: nic [at] cc2.netxdc.com mnt-by: MAINT-AS17680 changed: masat.tanaka [at] scsk.jp 20230511 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 110.50.30.0/24 descr: SCSK Corporation expire=12 origin: AS17680 mnt-by: MAINT-AS7684 changed: peer [at] sakura.ad.jp 20130515 source: RADB last-modified: 2023-11-13T15:45:25Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source