These entries are queried from radb.net using whois, you can try my project getting these.
:AS7521 route: 113.192.20.0/23 origin: AS7521 mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20231214 # 2323Z source: RADB last-modified: 2023-12-14T23:24:00Z rpki-ov-state: valid route: 113.192.20.0/23 descr: INTERNET MULTIFEED CO. origin: AS7521 notify: tech-c [at] mfeed.ad.jp mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20240131 source: JPIRR rpki-ov-state: valid route: 113.192.22.0/23 origin: AS7521 mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20231215 # 0051Z source: RADB last-modified: 2023-12-15T00:51:33Z rpki-ov-state: valid route: 113.192.22.0/23 descr: INTERNET MULTIFEED CO. origin: AS7521 notify: tech-c [at] mfeed.ad.jp mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20240131 source: JPIRR rpki-ov-state: valid route: 115.69.237.0/24 origin: AS7521 descr: INTERNET MULTIFEED CO. mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20221014 #04:22:45Z source: RADB last-modified: 2023-11-13T16:12:45Z rpki-ov-state: valid route: 115.69.237.0/24 descr: INTERNET MULTIFEED CO. origin: AS7521 notify: tech-c [at] mfeed.ad.jp mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20240131 source: JPIRR rpki-ov-state: valid route: 210.173.160.0/19 descr: INTERNET MULTIFEED CO. origin: AS7521 notify: tech-c [at] mfeed.ad.jp mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20050106 source: RADB last-modified: 2023-11-13T15:39:36Z rpki-ov-state: valid route: 210.173.160.0/19 descr: INTERNET MULTIFEED CO. admin-c: JP00001394 tech-c: JP00001394 origin: AS7521 notify: tech-c [at] mfeed.ad.jp mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20240131 source: JPIRR rpki-ov-state: valid route: 210.173.160.0/21 descr: INTERNET MULTIFEED CO. origin: AS7521 notify: tech-c [at] mfeed.ad.jp mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20240131 source: JPIRR rpki-ov-state: valid route: 210.173.160.0/21 origin: AS7521 descr: INTERNET MULTIFEED CO. notify: tech-c [at] mfeed.ad.jp mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20191113 #06:29:14Z source: RADB last-modified: 2023-11-13T15:58:51Z rpki-ov-state: valid route: 210.173.168.0/24 descr: INTERNET MULTIFEED CO. origin: AS7521 notify: tech-c [at] mfeed.ad.jp mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20240131 source: JPIRR rpki-ov-state: valid route: 210.173.168.0/24 origin: AS7521 descr: INTERNET MULTIFEED CO. notify: tech-c [at] mfeed.ad.jp mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20211012 #08:12:09Z source: RADB last-modified: 2023-11-13T16:08:17Z rpki-ov-state: valid route: 210.173.170.0/24 origin: AS7521 descr: INTERNET MULTIFEED CO. notify: tech-c [at] mfeed.ad.jp mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20200116 #05:29:33Z source: RADB last-modified: 2023-11-13T15:59:38Z rpki-ov-state: valid route: 210.173.170.0/24 descr: INTERNET MULTIFEED CO. origin: AS7521 notify: tech-c [at] mfeed.ad.jp mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20240131 source: JPIRR rpki-ov-state: valid route: 210.173.172.0/24 descr: INTERNET MULTIFEED CO. origin: AS7521 notify: tech-c [at] mfeed.ad.jp mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20240131 source: JPIRR rpki-ov-state: valid route: 210.173.172.0/24 origin: AS7521 descr: INTERNET MULTIFEED CO. notify: tech-c [at] mfeed.ad.jp mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20191113 #06:32:02Z source: RADB last-modified: 2023-11-13T15:58:51Z rpki-ov-state: valid route: 210.173.178.0/24 origin: AS7521 descr: INTERNET MULTIFEED CO. notify: tech-c [at] mfeed.ad.jp mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20211012 #08:12:44Z source: RADB last-modified: 2023-11-13T16:08:17Z rpki-ov-state: valid route: 210.173.178.0/24 descr: INTERNET MULTIFEED CO. origin: AS7521 notify: tech-c [at] mfeed.ad.jp mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20240131 source: JPIRR rpki-ov-state: valid route: 210.173.180.0/22 descr: INTERNET MULTIFEED CO. origin: AS7521 notify: tech-c [at] mfeed.ad.jp mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20240131 source: JPIRR rpki-ov-state: valid route: 210.173.180.0/22 origin: AS7521 descr: INTERNET MULTIFEED CO. notify: tech-c [at] mfeed.ad.jp mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20191113 #06:32:51Z source: RADB last-modified: 2023-11-13T15:58:51Z rpki-ov-state: valid route: 210.173.186.0/23 descr: INTERNET MULTIFEED CO. origin: AS7521 notify: tech-c [at] mfeed.ad.jp mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20240131 source: JPIRR rpki-ov-state: valid route: 210.173.186.0/23 origin: AS7521 descr: INTERNET MULTIFEED CO. notify: tech-c [at] mfeed.ad.jp mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20210118 #02:03:21Z source: RADB last-modified: 2023-11-13T16:03:24Z rpki-ov-state: valid route6: 2001:3a0::/32 descr: INTERNET MULTIFEED CO. admin-c: JP00001394 tech-c: JP00001394 origin: AS7521 notify: tech-c [at] mfeed.ad.jp mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20240131 source: JPIRR rpki-ov-state: valid route6: 2001:3a0::/32 descr: INTERNET MULTIFEED CO. origin: AS7521 mnt-by: MAINT-AS7521 changed: tech-c [at] mfeed.ad.jp 20120109 #01:49:15Z source: RADB last-modified: 2023-11-13T15:41:56Z rpki-ov-state: valid