These entries are queried from radb.net using whois, you can try my project getting these.
:AS397317 route: 100.42.19.0/24 origin: AS397317 descr: 817 West Peachtree Street Suite 770 Atlanta GA 30308 United States admin-c: TSP50-ARIN tech-c: TSP50-ARIN mnt-by: MNT-PS-862 created: 2020-08-28T15:19:09Z last-modified: 2023-12-06T21:54:58Z source: ARIN rpki-ov-state: valid