Apex domains cannot have CNAME records.
Question and response
Question
dig ezydomain.com. NS
Answer
ezydomain.com. 5 NS ns6.ezydomain.com.
ezydomain.com. 5 NS ns7.ezydomain.com.
Authority
The response has no authority records.
Additional
ns6.ezydomain.com. 5 A 8.210.185.13
ns7.ezydomain.com. 5 A 52.52.131.225
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0