These entries are queried from radb.net using whois, you can try my project getting these.
:AS394273 route: 206.220.188.0/22 descr: Airnet Route Object origin: AS394273 notify: admin [at] airnet.ca mnt-by: MNT-AW-59 changed: admin [at] airnet.ca 20160818 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source