These entries are queried from radb.net using whois, you can try my project getting these.
:AS21518 route: 204.107.242.0/24 descr: Integris Health 5555 North Grand Blvd. Suite 100 Oklahoma City, OK 73112 US =20 origin: AS21518 mnt-by: MNT-INTEGR-169 changed: wayldl [at] integris-health.com 20060509 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source