These entries are queried from radb.net using whois, you can try my project getting these.
:AS56423 route: 91.225.140.0/22 descr: UNET Route origin: AS56423 mnt-by: U-NET-MNT created: 2011-02-17T15:17:37Z last-modified: 2011-02-17T15:17:37Z 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 route: 185.15.6.0/23 descr: UNET more specific origin: AS56423 mnt-by: IC-MNT created: 2013-08-02T08:23:19Z last-modified: 2013-08-02T08:23:19Z 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