Apex domains cannot have CNAME records.
Question and response
Question
dig ecommercemegadeal.com. NS
Answer
ecommercemegadeal.com. 3 NS ndns2.cosmotown.com.
ecommercemegadeal.com. 3 NS ndns1.cosmotown.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0