These entries are queried from radb.net using whois, you can try my project getting these.
:AS33521 route: 64.25.130.0/24 descr: Bresnan Route for Missoula County Public Schools origin: AS33521 mnt-by: BRS-MNT changed: lgodfrey [at] bresnan.com 20100607 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source