These entries are queried from radb.net using whois, you can try my project getting these.
:AS199612 route: 91.223.43.0/24 descr: STELKOM origin: AS199612 mnt-by: STELKOM-MNT created: 2016-11-04T06:03:47Z last-modified: 2016-11-04T06:04:17Z 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: valid route6: 2001:67c:16c4::/48 descr: Bisnode d.o.o. origin: AS199612 mnt-by: Stelkom-mnt created: 2012-11-14T06:22:40Z last-modified: 2012-11-14T06:22:40Z 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: valid