These entries are queried from radb.net using whois, you can try my project getting these.
:AS40661 route: 208.91.96.0/22 descr: ESC6 IP Block origin: AS40661 mnt-by: MAINT-AS40661 changed: escse [at] esc6.net 20101007 #17:27:52Z source: RADB last-modified: 2023-11-13T15:41:01Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source