These entries are queried from radb.net using whois, you can try my project getting these.
:AS12408 route: 194.15.147.0/24 descr: Plus-Aniv Ltd. Route object origin: AS12408 mnt-by: BIKENT-MNT mnt-by: PLUSANIV-MNT created: 2003-12-09T16:52:27Z last-modified: 2017-11-09T19:08:13Z source: RIPE 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