These entries are queried from radb.net using whois, you can try my project getting these.
:AS58020 route: 193.28.46.0/24 descr: Tersys PI AS origin: AS58020 mnt-by: TERSYS-MNT mnt-routes: MNT-STRL mnt-routes: CARAVAN53-MNT mnt-routes: TKIBB-MNT mnt-routes: MNT-MIRAN created: 2012-04-09T10:36:18Z last-modified: 2014-03-07T12:03:39Z 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