These entries are queried from radb.net using whois, you can try my project getting these.
:AS393614 route: 216.229.18.0/24 origin: AS393614 descr: MacPractice, Inc mnt-by: MAINT-AS7806 changed: noc-radb [at] binary.net 20210428 #15:36:43Z source: RADB last-modified: 2023-11-13T16:05:31Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source