mx0.bresnan.net.msg.chrl.nc.charter.net has no CNAME records.
Question and response
Question
dig mx0.bresnan.net.msg.chrl.nc.charter.net. NS
Answer
The response has no answer records.
Authority
msg.chrl.nc.charter.net. 3600 SOA ns1.charter.com. hostmaster.charter.com. 2025060000 43200 3600 2419200 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0