These entries are queried from radb.net using whois, you can try my project getting these.
:AS398368 route: 23.171.16.0/24 origin: AS398368 descr: MNT-DL-785 route 023.171.016.000/24 AS398368 admin-c: DAVIR1-ARIN tech-c: DAVIR1-ARIN tech-c: DAVIS2692-ARIN tech-c: JACKS1098-ARIN mnt-by: MNT-DL-785 created: 2021-01-31T20:32:05Z last-modified: 2022-11-22T20:25:13Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:fcd6::/36 origin: AS398368 descr: MNT-DL-785 route 2602:FCD6:0000:0000:0000:0000:0000:0000/36 AS398368 admin-c: DAVIR1-ARIN tech-c: DAVIR1-ARIN tech-c: DAVIS2692-ARIN tech-c: JACKS1098-ARIN mnt-by: MNT-DL-785 created: 2021-01-31T20:31:07Z last-modified: 2022-11-22T20:25:13Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source