These entries are queried from radb.net using whois, you can try my project getting these.
:AS31761 route: 198.160.245.0/24 descr: Talisen Technologies 12655 Olive Blvd. Suite 500 St. Louis, MO 63141 US origin: AS31761 mnt-by: MNT-TALIS-1 changed: csmith [at] talisentech.com 20040205 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source