These entries are queried from radb.net using whois, you can try my project getting these.
:AS18074 route: 210.175.224.0/20 descr: FRT-IDC X-Keiro : ml-noc [at] firstriding.co.jp admin-c: YK10416JP tech-c: YK10416JP origin: AS18074 notify: ml-noc [at] firstriding.co.jp mnt-by: MAINT-AS18074 changed: kina [at] firstriding.co.jp 20130903 changed: kuroshima [at] firstriding.co.jp 20140804 changed: hisashi_inaba [at] firstriding.co.jp 20150701 changed: kina [at] firstriding.co.jp 20161003 changed: kuroshima [at] firstriding.co.jp 20171026 changed: namihira [at] firstriding.co.jp 20181010 changed: kina [at] firstriding.co.jp 20191010 changed: masaki_nakasone [at] firstriding.co.jp 20201006 changed: masaki_nakasone [at] firstriding.co.jp 20211005 changed: masaki_nakasone [at] firstriding.co.jp 20220411 changed: masaki_nakasone [at] firstriding.co.jp 20230410 changed: masaki_nakasone [at] firstriding.co.jp 20240409 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.175.224.0/20 descr: FRT-IDC tech-c: YK10416JP origin: AS18074 mnt-by: MAINT-AS18074 changed: kina [at] firstriding.co.jp 20041118 source: RADB last-modified: 2023-11-13T15:39:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2402:7700::/32 descr: FRT-IDC X-Keiro : ml-noc [at] firstriding.co.jp admin-c: YK10416JP tech-c: YK10416JP origin: AS18074 notify: ml-noc [at] firstriding.co.jp mnt-by: MAINT-AS18074 changed: kina [at] firstriding.co.jp 20130903 changed: kuroshima [at] firstriding.co.jp 20140804 changed: hisashi_inaba [at] firstriding.co.jp 20150701 changed: kina [at] firstriding.co.jp 20161003 changed: kuroshima [at] firstriding.co.jp 20171026 changed: namihira [at] firstriding.co.jp 20181010 changed: kina [at] firstriding.co.jp 20191010 changed: masaki_nakasone [at] firstriding.co.jp 20201006 changed: masaki_nakasone [at] firstriding.co.jp 20211005 changed: masaki_nakasone [at] firstriding.co.jp 20220411 changed: masaki_nakasone [at] firstriding.co.jp 20230410 changed: masaki_nakasone [at] firstriding.co.jp 20240409 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2402:7700::/32 origin: AS18074 descr: FRT-IDC admin-c: YK10416JP tech-c: YK10416JP mnt-by: MAINT-AS18074 changed: ml-noc [at] firstriding.co.jp 20221220 #05:40:39Z source: RADB last-modified: 2023-11-13T16:13:14Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source