These entries are queried from radb.net using whois, you can try my project getting these.
:AS54764 route: 199.181.81.0/24 descr: Learned from CWB origin: AS54764 mnt-by: MAINT-AS14007 changed: noc [at] skywaywest.com 20160220 #03:37:03Z source: RADB last-modified: 2023-11-13T15:48:45Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source