Apex domains cannot have CNAME records.
Question and response
Question
dig ekvia.com. NS
Answer
ekvia.com. 5 NS ns.ekvia.com.
ekvia.com. 5 NS ns.ekvia.net.
Authority
The response has no authority records.
Additional
ns.ekvia.com. 5 A 91.210.191.12
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0