These entries are queried from radb.net using whois, you can try my project getting these.
:AS51291 route: 91.218.128.0/22 descr: Istok Ltd origin: AS51291 mnt-by: MNT-ISTOK created: 2010-07-28T10:00:57Z last-modified: 2010-07-28T10:00:57Z 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