I have two domain. One is winstructorlab.com; The other is child domain Beijin.winstructorlab.com (bjdc1cn.beijin.winstructorlab.com)
in the winstructorlab.com, I use nslookup on itdc1cn.winstructorlab.com
nslookup bjdc1cn
error:
itdc1cn.winstructorlab.com can not find bjdc1cn: Non-existent domain.
nslookup bjdc1cn.beijin.winstructorlab.com
server: itdc1cn.winstructorlab.com
address: 192.168.0.1
Name: bjdc1cn.beijin.winsturctorlab.com
address: 192.168.0.6
Why? bjdc1cn not good? bjdc1cn.beijin.winstructorlab.com is good?