These entries are queried from radb.net using whois, you can try my project getting these.
:AS18607 route: 64.145.73.0/24 descr: Highwinds Network Group origin: AS18607 mnt-by: MNT-HWNG changed: jon.lewis [at] highwinds.com 20150325 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 209.107.219.0/24 descr: Highwinds Network Group origin: AS18607 mnt-by: MNT-HWNG changed: jon.lewis [at] highwinds.com 20150325 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source