con1.nipr.MIL has no CNAME records.
Question and response
Question
dig con1.nipr.MIL. NS
Answer
The response has no answer records.
Authority
nipr.mil. 1797 SOA dns1.nipr.mil. hostmaster\@nic.mil. 37613 21600 3600 2419200 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0