These entries are queried from radb.net using whois, you can try my project getting these.
:AS50283 route: 193.106.72.0/23 descr: Business Center Ltd origin: AS50283 mnt-by: MNT-BUSINESSCENTER created: 2011-02-07T12:44:39Z last-modified: 2011-02-07T12:44:39Z 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 route: 193.106.74.0/23 descr: Business Center Ltd origin: AS50283 mnt-by: MNT-BUSINESSCENTER created: 2011-02-07T12:49:03Z last-modified: 2011-02-07T12:49:03Z 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