These entries are queried from radb.net using whois, you can try my project getting these.
:AS14489 route: 64.126.222.0/23 descr: dendrite origin: AS14489 mnt-by: LEVEL3-MNT changed: a.elamparuthi [at] level3.com 20081214 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.126.225.0/24 descr: route for Dendrite International origin: AS14489 mnt-by: LEVEL3-MNT changed: antonio.bolton [at] level3.com 20090623 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.126.226.0/24 descr: dendrite origin: AS14489 mnt-by: LEVEL3-MNT changed: a.elamparuthi [at] level3.com 20081214 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source