These entries are queried from radb.net using whois, you can try my project getting these.
:AS201617 route: 148.81.230.0/24 descr: INSTYTUT LOTNICTWA INSTYTUT BADAWCZY origin: AS201617 notify: registry [at] nask.pl mnt-by: NASK2-MNT created: 2014-10-10T08:30:26Z last-modified: 2014-10-10T08:30:26Z 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