These entries are queried from radb.net using whois, you can try my project getting these.
:AS198600 route: 91.237.64.0/24 descr: National JSC "Naftogaz Of Ukraine" origin: AS198600 notify: admin [at] naftogaz.com notify: registry [at] ip.datagroup.ua created: 2012-03-20T15:12:01Z last-modified: 2012-03-20T15:12:01Z source: RIPE mnt-by: MNT-NAFTOGAZ remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source