These entries are queried from radb.net using whois, you can try my project getting these.
:AS56413 route: 91.224.134.0/23 descr: PROSERVIS origin: AS56413 mnt-by: MNT-PROSERVIS-LT created: 2011-04-05T13:23:34Z last-modified: 2011-04-05T13:23:34Z 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