These entries are queried from radb.net using whois, you can try my project getting these.
:AS17524 route: 61.213.128.0/20 origin: AS17524 descr: OPTAGE Inc. (formerly DS Networks) notify: noc [at] optage.co.jp mnt-by: MAINT-AS17511 changed: noc [at] optage.co.jp 20210628 #08:31:34Z source: RADB last-modified: 2023-11-13T16:07:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.8.48.0/20 descr: K-OPTICOM (TEMP OBJECT BY NTTC) origin: AS17524 notify: tech [at] ntt.net mnt-by: MAINT-NTTCOM-BB changed: yoko [at] ntt.net.nospam 20090217 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.8.48.0/20 origin: AS17524 descr: OPTAGE Inc. (formerly DS Networks) notify: noc [at] optage.co.jp mnt-by: MAINT-AS17511 changed: noc [at] optage.co.jp 20210628 #22:38:16Z source: RADB last-modified: 2023-11-13T16:07:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.60.32.0/20 origin: AS17524 descr: OPTAGE Inc. (formerly DS Networks) notify: noc [at] optage.co.jp mnt-by: MAINT-AS17511 changed: noc [at] optage.co.jp 20210628 #22:43:36Z source: RADB last-modified: 2023-11-13T16:07:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.60.32.0/20 descr: K-OPTICOM (TEMP OBJECT BY NTTC) origin: AS17524 notify: tech [at] ntt.net mnt-by: MAINT-NTTCOM-BB changed: yoko [at] ntt.net.nospam 20090217 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.216.48.0/20 origin: AS17524 descr: OPTAGE Inc. (formerly DS Networks) notify: noc [at] optage.co.jp mnt-by: MAINT-AS17511 changed: noc [at] optage.co.jp 20210628 #23:26:21Z source: RADB last-modified: 2023-11-13T16:07:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.244.138.0/23 origin: AS17524 descr: OPTAGE Inc. (formerly DS Networks) notify: noc [at] optage.co.jp mnt-by: MAINT-AS17511 changed: noc [at] optage.co.jp 20210628 #23:13:09Z source: RADB last-modified: 2023-11-13T16:07:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.175.80.0/20 descr: K-OPTICOM (TEMP OBJECT BY NTTC) origin: AS17524 notify: tech [at] ntt.net mnt-by: MAINT-NTTCOM-BB changed: yoko [at] ntt.net.nospam 20090217 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.175.80.0/20 origin: AS17524 descr: OPTAGE Inc. (formerly DS Networks) notify: noc [at] optage.co.jp mnt-by: MAINT-AS17511 changed: noc [at] optage.co.jp 20210628 #09:49:26Z source: RADB last-modified: 2023-11-13T16:07:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.199.80.0/20 descr: K-OPTICOM (TEMP OBJECT BY NTTC) origin: AS17524 notify: tech [at] ntt.net mnt-by: MAINT-NTTCOM-BB changed: yoko [at] ntt.net.nospam 20090217 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 218.45.96.0/20 origin: AS17524 descr: OPTAGE Inc. (formerly DS Networks) notify: noc [at] optage.co.jp mnt-by: MAINT-AS17511 changed: noc [at] optage.co.jp 20210628 #09:39:14Z source: RADB last-modified: 2023-11-13T16:07:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 218.45.96.0/20 descr: K-OPTICOM (TEMP OBJECT BY NTTC) origin: AS17524 notify: tech [at] ntt.net mnt-by: MAINT-NTTCOM-BB changed: yoko [at] ntt.net.nospam 20090217 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 218.45.96.0/22 descr: K-OPTICOM (TEMP OBJECT BY NTTC) origin: AS17524 notify: tech [at] ntt.net mnt-by: MAINT-NTTCOM-BB changed: yoko [at] ntt.net.nospam 20090217 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 218.45.104.0/21 descr: K-OPTICOM (TEMP OBJECT BY NTTC) origin: AS17524 notify: tech [at] ntt.net mnt-by: MAINT-NTTCOM-BB changed: yoko [at] ntt.net.nospam 20090217 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source