These entries are queried from radb.net using whois, you can try my project getting these.
:AS49452 route: 91.213.5.0/24 descr: A1 Systems Ltd. origin: AS49452 mnt-by: MNT-A1-SYSTEMS created: 2010-03-31T08:08:13Z last-modified: 2010-03-31T08:08:13Z 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