These entries are queried from radb.net using whois, you can try my project getting these.
:AS41751 route: 91.206.0.0/23 descr: OCADO-UK-IP-BLOCK origin: AS41751 mnt-by: OCADO-MNT created: 2012-04-25T11:12:53Z last-modified: 2012-04-25T11:12:53Z 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: valid