These entries are queried from radb.net using whois, you can try my project getting these.
:AS393470 route: 192.40.46.0/24 origin: AS393470 descr: Switch Communications Customer Route member-of: RS-AS23005 remarks: 20210224-472 mnt-by: MAINT-SWITCH changed: netops [at] switch.com 20210310 #17:32:15Z source: RADB last-modified: 2023-11-13T16:05:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source