comendosystems-com.mx2.comendosystems.net has no CNAME records.
Question and response
Question
dig comendosystems-com.mx2.comendosystems.net. NS
Answer
The response has no answer records.
Authority
mx2.comendosystems.net. 2678 SOA ns1.electric.net. dns.electric.net. 1453845396 10000 1800 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0