These entries are queried from radb.net using whois, you can try my project getting these.
:AS49853 route: 91.212.134.0/24 descr: CETRTAPOT d.o.o. origin: AS49853 mnt-by: MNT-T-2 created: 2009-11-09T08:01:52Z last-modified: 2009-11-09T08:01:52Z 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