Apex domains cannot have CNAME records.
Question and response
Question
dig whitedns.com. NS
Answer
whitedns.com. 4 NS ns03.whitedns.com.
whitedns.com. 4 NS ns04.whitedns.com.
Authority
The response has no authority records.
Additional
ns03.whitedns.com. 4 A 64.40.14.99
ns04.whitedns.com. 4 A 64.40.14.99
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0