These entries are queried from radb.net using whois, you can try my project getting these.
:AS57599 route: 91.233.90.0/23 descr: Private Enterprise On Line origin: AS57599 mnt-by: ISPONLINE-MNT created: 2011-12-09T10:11:08Z last-modified: 2011-12-09T10:15:05Z 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