These entries are queried from radb.net using whois, you can try my project getting these.
:AS398868 route: 163.123.244.0/23 origin: AS398868 mnt-by: MNT-ISL-348 tech-c: BROWN2683-ARIN admin-c: BROWN2683-ARIN source: ARIN created: 2020-10-04T04:33:31Z last-modified: 2020-10-04T04:33:31Z descr: MNT-ISL-348 route 163.123.244.000/23 AS398868 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 163.123.244.0/24 origin: AS398868 admin-c: BROWN2683-ARIN tech-c: BROWN2683-ARIN mnt-by: MNT-ISL-348 created: 2021-01-14T05:21:25Z last-modified: 2021-01-14T05:21:25Z source: ARIN descr: MNT-ISL-348 route 163.123.244.000/24 AS398868 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:fcfc:1::/48 origin: AS398868 mnt-by: MNT-ISL-348 tech-c: BROWN2683-ARIN admin-c: BROWN2683-ARIN source: ARIN created: 2020-10-15T19:18:11Z last-modified: 2020-10-15T19:18:11Z descr: MNT-ISL-348 route 2602:FCFC:0001:0000:0000:0000:0000:0000/48 AS398868 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source