These entries are queried from radb.net using whois, you can try my project getting these.
:AS40031 route: 208.84.16.0/22 descr: route update via web origin: AS40031 mnt-by: LEVEL3-MNT changed: Kanagarajan.Ranganathan [at] level3.com 20080603 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source