These entries are queried from radb.net using whois, you can try my project getting these.
:AS397851 route: 209.137.221.0/24 origin: AS397851 descr: Proxy object created fbo Seward County Community College mnt-by: MAINT-AS27425 changed: mriley [at] ideatek.com 20240328 # 1953Z source: RADB last-modified: 2024-03-28T19:53:55Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source