These entries are queried from radb.net using whois, you can try my project getting these.
:AS14800 route: 199.171.52.0/24 descr: Metratech origin: AS14800 mnt-by: ONECOMM-MNT changed: ewallace [at] onecommunications.com 20091113 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source