These entries are queried from radb.net using whois, you can try my project getting these.
:AS-ARIN as-set: AS-ARIN descr: PO Box 232290 Centreville VA 20120 United States members: AS10745,AS53535,AS393220,AS393225,AS394018,AS395418 admin-c: KOSTE6-ARIN tech-c: FORST20-ARIN tech-c: JEFFE114-ARIN tech-c: MJO282-ARIN tech-c: TOSCA5-ARIN mnt-by: MNT-ARINOPS created: 2023-03-18T15:50:16Z last-modified: 2023-04-25T14:10:36Z source: ARIN