These entries are queried from radb.net using whois, you can try my project getting these.
:AS397273 route: 216.24.57.0/24 origin: AS397273 descr: 655 5th St #19 San Francisco CA 94107 United States admin-c: GOELA-ARIN tech-c: RAC91-ARIN mnt-by: MNT-RS-1125 created: 2020-12-16T22:29:28Z last-modified: 2024-02-06T18:02:24Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source