These entries are queried from radb.net using whois, you can try my project getting these.
:AS173 route: 163.138.160.0/19 descr: NTT RD network origin: AS173 mnt-by: MAINT-AS173 changed: ogura [at] core.ecl.net 20020909 changed: kawano.tetsuo [at] lab.ntt.co.jp 20070619 #07:21:07(UTC) source: RADB last-modified: 2023-11-13T15:39:41Z rpki-ov-state: valid route: 163.138.160.0/19 origin: AS173 descr: Nippon Telegraph and Telephone Corporation 3-9-11 Midori-cho Musashino-shi mnt-by: MAINT-JP-NTTECL-JP last-modified: 2023-06-27T11:16:57Z source: APNIC rpki-ov-state: valid route: 192.47.168.0/23 descr: NTT RD network origin: AS173 mnt-by: MAINT-AS173 changed: kawano.tetsuo [at] lab.ntt.co.jp 20070617 #03:09:49(UTC) changed: kawano.tetsuo [at] lab.ntt.co.jp 20070619 #07:22:04(UTC) source: RADB last-modified: 2023-11-13T15:39:41Z rpki-ov-state: valid route: 192.47.168.0/23 origin: AS173 descr: Nippon Telegraph and Telephone Corporation 3-9-11 Midori-cho Musashino-shi mnt-by: MAINT-JP-NTTECL-JP last-modified: 2023-06-27T11:23:06Z source: APNIC rpki-ov-state: valid route: 192.47.168.0/24 origin: AS173 descr: Nippon Telegraph and Telephone Corporation 3-9-11 Midori-cho Musashino-shi mnt-by: MAINT-JP-NTTECL-JP last-modified: 2023-06-27T11:23:07Z source: APNIC rpki-ov-state: valid route: 192.47.169.0/24 origin: AS173 descr: Nippon Telegraph and Telephone Corporation 3-9-11 Midori-cho Musashino-shi mnt-by: MAINT-JP-NTTECL-JP last-modified: 2023-06-27T11:23:08Z source: APNIC rpki-ov-state: valid