These entries are queried from radb.net using whois, you can try my project getting these.
:AS57582 route: 91.233.48.0/23 descr: AirNetRoute origin: AS57582 mnt-by: SI74808-MNT created: 2011-12-08T10:11:52Z last-modified: 2011-12-08T10:11:52Z 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