These entries are queried from radb.net using whois, you can try my project getting these.
:AS57636 route: 91.233.244.0/23 descr: Olborg Ltd. origin: AS57636 mnt-by: OLBORG-MNT created: 2011-12-21T15:23:37Z last-modified: 2011-12-21T15:23:37Z 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