Apex domains cannot have CNAME records.
Question and response
Question
dig dwihansen.com. NS
Answer
dwihansen.com. 4 NS ns-1908.awsdns-46.co.uk.
dwihansen.com. 4 NS ns-192.awsdns-24.com.
dwihansen.com. 4 NS ns-1267.awsdns-30.org.
dwihansen.com. 4 NS ns-1706.awsdns-21.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0