me@myhost:~$ host -t ns denver.co.us. a.gtld.biz
Using domain server:
Name: a.gtld.biz
Address: 209.173.53.162#53
Aliases:
denver.co.us name server ns.utah.edu.
denver.co.us name server ns1.westnet.net.
me@myhost:~$ host -t ns clue.denver.co.us. ns.utah.edu
Using domain server:
Name: ns.utah.edu
Address: 128.110.124.120#53
Aliases:
clue.denver.co.us name server dns0.techangle.com.
clue.denver.co.us name server ta5.techangle.com.
me@myhost:~$