These entries are queried from radb.net using whois, you can try my project getting these.
:AS51443 route: 91.217.159.0/24 descr: 91.217.159.0/24 route origin: AS51443 mnt-by: MNT-ITLOGIC created: 2010-08-31T07:24:21Z last-modified: 2010-08-31T07:24:21Z 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