These entries are queried from radb.net using whois, you can try my project getting these.
:AS62503 route: 192.107.135.0/24 descr: PEAK-15 origin: AS62503 mnt-by: D102-MNT changed: ipadmin [at] data102.com 20150319 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source