These entries are queried from radb.net using whois, you can try my project getting these.
:AS42131 route: 91.189.16.0/21 descr: DWA_ZERO_ROUTE origin: AS42131 mnt-by: dwazero-MNT created: 2007-01-16T08:36:20Z last-modified: 2014-05-27T21:16:47Z 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: not_found # No ROAs found, or RPKI validation not enabled for source