These entries are queried from radb.net using whois, you can try my project getting these.
:AS52032 route: 91.220.253.0/24 descr: Meat-Packing Plant "Jubilee" LTD origin: AS52032 mnt-lower: MNT-JUBILEE mnt-routes: MNT-JUBILEE mnt-by: MNT-JUBILEE created: 2011-02-03T13:42:06Z last-modified: 2011-02-03T13:44:18Z 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