These entries are queried from radb.net using whois, you can try my project getting these.
:AS59099 route: 210.231.216.0/22 descr: BBT CSLAB Blk3 X-Keiro: lab-admin [at] bbtower.co.jp origin: AS59099 notify: lab-admin [at] bbtower.co.jp mnt-by: MAINT-AS59099 changed: lab-admin [at] bbtower.co.jp 20230414 source: JPIRR rpki-ov-state: valid route6: 2405:f000:150::/48 origin: AS59099 descr: BBT CSLABv6 Blk1 notify: as9607 [at] bbtower.ad.jp mnt-by: MAINT-AS9607 changed: AS9607 [at] bbtower.ad.jp 20230418 #00:26:01Z source: RADB last-modified: 2023-11-13T16:16:29Z rpki-ov-state: valid