These entries are queried from radb.net using whois, you can try my project getting these.
:AS393390 route: 204.52.237.0/24 origin: AS393390 descr: AS393390 mnt-by: MAINT-AS15164 changed: sreenivas.gajula [at] upnfiber.com 20221026 #19:35:32Z source: RADB last-modified: 2023-11-13T16:12:48Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source