Question and response
Question
dig smtp.netcompartner.com. NS
Answer
smtp.netcompartner.com. 5 CNAME cow1.netcompartner.com.
Authority
netcompartner.com. 10782 SOA s2.netcompartner.com. hostmaster.netcompartner.com. 1384763827 10800 3600 604800 38400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0