Apex domains cannot have CNAME records.
Question and response
Question
dig zorvixel.com. NS
Answer
zorvixel.com. 5 NS ns-752.awsdns-30.net.
zorvixel.com. 5 NS ns-1799.awsdns-32.co.uk.
zorvixel.com. 5 NS ns-1735.awsdns-24.co.uk.
zorvixel.com. 5 NS ns-1869.awsdns-41.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0