These entries are queried from radb.net using whois, you can try my project getting these.
:AS398990 route: 74.120.15.0/24 origin: AS398990 descr: Jacksonville Aviation Authority - JAA - AS398990 mnt-by: MAINT-AS13760 changed: graham.wooden [at] uniti.com 20201029 #15:58:10Z source: RADB last-modified: 2023-11-13T16:02:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source