Apex domains cannot have CNAME records.
Question and response
Question
dig quicns.com. NS
Answer
quicns.com. 5 NS kevin.quicns.com.
quicns.com. 5 NS jon.quicns.com.
Authority
The response has no authority records.
Additional
jon.quicns.com. 5 A 64.66.240.1
kevin.quicns.com. 5 A 64.66.241.1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0