IPv6 Deployment Status: latest error msg for rbz.co.zw

Error(s) found during latest scan: NS=ns3.telco.co.zw=2c0f:f0b8:0:2::4 does not respond, NS=ns1.telco.co.zw=2c0f:f0b8::1 does not respond, NS=ns5.telco.co.zw=2c0f: