These entries are queried from radb.net using whois, you can try my project getting these.
:AS6832 route: 159.148.144.0/24 descr: DPU Route origin: AS6832 mnt-by: DPU-MNT created: 2015-10-27T10:29:54Z last-modified: 2015-10-27T10:29:54Z 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