These entries are queried from radb.net using whois, you can try my project getting these.
:AS51434 route: 91.217.138.0/24 descr: MERCATOR-CG DOO Podgorica descr: Put Radomira Ivanovica 2 descr: 81000 Podgorica descr: Montenegro origin: AS51434 mnt-by: AS9119-MNT notify: ripe [at] softnet.si created: 2010-09-06T13:00:40Z last-modified: 2010-09-06T13:00:40Z 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