These entries are queried from radb.net using whois, you can try my project getting these.
:AS23099 route: 207.212.23.0/24 descr: route update via web origin: AS23099 mnt-by: LEVEL3-MNT changed: Christiano.solis [at] level3.com 20071102 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source