These entries are queried from radb.net using whois, you can try my project getting these.
:AS48442 route: 91.207.252.0/23 descr: Vladivostokavia-NET origin: AS48442 notify: noc [at] vtc.ru mnt-by: AS8920-MNT created: 2009-02-10T04:11:46Z last-modified: 2009-02-10T04:11:46Z 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