Apex domains cannot have CNAME records.
Question and response
Question
dig ediscdns3.com. NS
Answer
ediscdns3.com. 4 NS ns1.ediscdns3.com.
ediscdns3.com. 4 NS ns2.ediscdns3.com.
Authority
The response has no authority records.
Additional
ns1.ediscdns3.com. 4 A 170.10.164.198
ns2.ediscdns3.com. 4 A 170.10.164.207
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0