These entries are queried from radb.net using whois, you can try my project getting these.
:AS18129 route: 27.109.96.0/21 descr: OKAYAMA NETWORK INC. origin: AS18129 notify: oni-tech [at] oni.co.jp mnt-by: MAINT-AS18129 changed: horiike [at] oni.co.jp 20100624 source: NTTCOM rpki-ov-state: valid route: 27.109.96.0/21 descr: OKAYAMA NETWORK INC. origin: AS18129 notify: oni-tech [at] oni.co.jp mnt-by: MAINT-AS18129 changed: horiike [at] oni.co.jp 20100624 changed: horiike [at] oni.co.jp 20160611 changed: oni-tech [at] oni.co.jp 20170905 changed: tsuneto [at] oni.co.jp 20181203 changed: tsuneto [at] oni.co.jp 20191122 changed: tsuneto [at] oni.co.jp 20201006 changed: tsuneto [at] oni.co.jp 20210905 changed: tsuneto [at] oni.co.jp 20220906 changed: tsuneto [at] oni.co.jp 20230901 source: JPIRR rpki-ov-state: valid route: 27.109.96.0/21 descr: OKAYAMA NETWORK INC. origin: AS18129 notify: oni-tech [at] oni.co.jp mnt-by: MAINT-AS18129 changed: horiike [at] oni.co.jp 20100624 source: RADB last-modified: 2023-11-13T15:40:58Z rpki-ov-state: valid route: 103.154.6.0/23 descr: OKAYAMA NETWORK INC. origin: AS18129 notify: oni-tech [at] oni.co.jp mnt-by: MAINT-AS18129 changed: okitsu [at] oni.co.jp 20201007 #03:24:08Z source: RADB last-modified: 2023-11-13T16:02:24Z rpki-ov-state: valid route: 103.154.6.0/23 descr: OKAYAMA NETWORK INC. origin: AS18129 notify: oni-tech [at] oni.co.jp mnt-by: MAINT-AS18129 changed: tsuneto [at] oni.co.jp 20201006 changed: tsuneto [at] oni.co.jp 20210905 changed: tsuneto [at] oni.co.jp 20220906 changed: tsuneto [at] oni.co.jp 20230901 source: JPIRR rpki-ov-state: valid route: 119.47.96.0/20 descr: OKAYAMA NETWORK INC. origin: AS18129 notify: oni-tech [at] oni.co.jp mnt-by: MAINT-AS18129 changed: horiike [at] oni.co.jp 20080804 changed: horiike [at] oni.co.jp 20160611 changed: oni-tech [at] oni.co.jp 20170905 changed: tsuneto [at] oni.co.jp 20181203 changed: tsuneto [at] oni.co.jp 20191122 changed: tsuneto [at] oni.co.jp 20201006 changed: tsuneto [at] oni.co.jp 20210905 changed: tsuneto [at] oni.co.jp 20220906 changed: tsuneto [at] oni.co.jp 20230901 source: JPIRR rpki-ov-state: valid route: 119.47.96.0/20 descr: OKAYAMA NETWORK INC. origin: AS18129 notify: oni-tech [at] oni.co.jp mnt-by: MAINT-AS18129 changed: horiike [at] oni.co.jp 20080812 changed: horiike [at] oni.co.jp 20100601 source: NTTCOM rpki-ov-state: valid route: 119.47.96.0/20 descr: OKAYAMA NETWORK INC. origin: AS18129 mnt-by: MAINT-AS18129 changed: okitsu [at] oni.co.jp 20060707 source: RADB last-modified: 2023-11-13T15:39:54Z rpki-ov-state: valid route: 180.200.248.0/22 descr: OKAYAMA NETWORK INC. origin: AS18129 notify: oni-tech [at] oni.co.jp mnt-by: MAINT-AS18129 changed: horiike [at] oni.co.jp 20100624 source: NTTCOM rpki-ov-state: valid route: 180.200.248.0/22 descr: OKAYAMA NETWORK INC. origin: AS18129 notify: oni-tech [at] oni.co.jp mnt-by: MAINT-AS18129 changed: horiike [at] oni.co.jp 20100624 changed: horiike [at] oni.co.jp 20160611 changed: oni-tech [at] oni.co.jp 20170905 changed: tsuneto [at] oni.co.jp 20181203 changed: tsuneto [at] oni.co.jp 20191122 changed: tsuneto [at] oni.co.jp 20201006 changed: tsuneto [at] oni.co.jp 20210905 changed: tsuneto [at] oni.co.jp 20220906 changed: tsuneto [at] oni.co.jp 20230901 source: JPIRR rpki-ov-state: valid route: 180.200.248.0/22 descr: OKAYAMA NETWORK INC. origin: AS18129 notify: oni-tech [at] oni.co.jp mnt-by: MAINT-AS18129 changed: horiike [at] oni.co.jp 20100624 source: RADB last-modified: 2023-11-13T15:40:58Z rpki-ov-state: valid route: 202.70.224.0/19 descr: OKAYAMA NETWORK INC. origin: AS18129 notify: oni-tech [at] oni.co.jp mnt-by: MAINT-AS18129 changed: horiike [at] oni.co.jp 20080804 changed: horiike [at] oni.co.jp 20160611 changed: oni-tech [at] oni.co.jp 20170905 changed: tsuneto [at] oni.co.jp 20181203 changed: tsuneto [at] oni.co.jp 20191122 changed: tsuneto [at] oni.co.jp 20201006 changed: tsuneto [at] oni.co.jp 20210905 changed: tsuneto [at] oni.co.jp 20220906 changed: tsuneto [at] oni.co.jp 20230901 source: JPIRR rpki-ov-state: valid route: 202.70.224.0/19 descr: OKAYAMA NETWORK INC. origin: AS18129 remarks: notify: harase [at] oni.co.jp mnt-by: MAINT-AS18129 changed: harase [at] oni.co.jp 20040610 source: RADB last-modified: 2023-11-13T15:39:35Z rpki-ov-state: valid route: 202.70.224.0/19 descr: OKAYAMA NETWORK INC. origin: AS18129 notify: oni-tech [at] oni.co.jp mnt-by: MAINT-AS18129 changed: horiike [at] oni.co.jp 20080812 changed: horiike [at] oni.co.jp 20100601 source: NTTCOM rpki-ov-state: valid route: 202.238.16.0/20 origin: AS18129 descr: OKAYAMA NETWORK INC. notify: oni-tech [at] oni.co.jp mnt-by: MAINT-AS18129 changed: oni-tech [at] oni.co.jp 20220713 #03:02:31Z source: RADB last-modified: 2023-11-13T16:11:44Z rpki-ov-state: valid route: 202.238.16.0/20 descr: OKAYAMA NETWORK INC. origin: AS18129 notify: oni-tech [at] oni.co.jp mnt-by: MAINT-AS18129 changed: tsuneto [at] oni.co.jp 20230703 source: JPIRR rpki-ov-state: valid route: 218.231.160.0/19 origin: AS18129 descr: OKAYAMA NETWORK INC. admin-c: JP00232896 tech-c: JP00232896 notify: oni-tech [at] oni.co.jp mnt-by: MAINT-AS18129 changed: oni-tech [at] oni.co.jp 20230607 #01:12:36Z source: RADB last-modified: 2023-11-13T16:17:27Z rpki-ov-state: valid route: 218.231.160.0/19 descr: OKAYAMA NETWORK INC. origin: AS18129 notify: oni-tech [at] oni.co.jp mnt-by: MAINT-AS18129 changed: tsuneto [at] oni.co.jp 20230608 source: JPIRR rpki-ov-state: valid route: 219.111.208.0/20 descr: OKAYAMA NETWORK INC. origin: AS18129 mnt-by: MAINT-AS18129 changed: harase [at] oni.co.jp 20020731 source: RADB last-modified: 2023-11-13T15:39:33Z rpki-ov-state: valid route: 219.111.208.0/20 descr: OKAYAMA NETWORK INC. origin: AS18129 notify: oni-tech [at] oni.co.jp mnt-by: MAINT-AS18129 changed: horiike [at] oni.co.jp 20080804 changed: horiike [at] oni.co.jp 20160611 changed: oni-tech [at] oni.co.jp 20170905 changed: tsuneto [at] oni.co.jp 20181203 changed: tsuneto [at] oni.co.jp 20191122 changed: tsuneto [at] oni.co.jp 20201006 changed: tsuneto [at] oni.co.jp 20210905 changed: tsuneto [at] oni.co.jp 20220906 changed: tsuneto [at] oni.co.jp 20230901 source: JPIRR rpki-ov-state: valid route: 219.111.208.0/20 descr: OKAYAMA NETWORK INC. origin: AS18129 notify: oni-tech [at] oni.co.jp mnt-by: MAINT-AS18129 changed: horiike [at] oni.co.jp 20080812 changed: horiike [at] oni.co.jp 20100601 source: NTTCOM rpki-ov-state: valid