These entries are queried from radb.net using whois, you can try my project getting these.
:AS397915 route: 23.159.88.0/23 origin: AS397915 descr: NET-23-159-88-0-1 admin-c: HALLJ158-ARIN tech-c: HALLJ158-ARIN mnt-by: MNT-HRML-11 created: 2023-09-20T17:29:53Z last-modified: 2023-09-20T17:29:53Z source: ARIN rpki-ov-state: valid route6: 2602:815:5000::/44 origin: AS397915 descr: NET6-2602-815-5000-1 admin-c: HALLJ158-ARIN tech-c: HALLJ158-ARIN mnt-by: MNT-HRML-11 created: 2023-09-20T17:32:53Z last-modified: 2023-09-20T17:32:53Z source: ARIN rpki-ov-state: valid