These entries are queried from radb.net using whois, you can try my project getting these.
:AS42573 route: 91.199.89.0/24 descr: SKRIVANEK SP. Z O.O. origin: AS42573 mnt-by: AS42573-MNT mnt-by: NETIA-MNT created: 2007-12-27T09:16:27Z last-modified: 2012-11-22T20:05:30Z 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