Apex domains cannot have CNAME records.
Question and response
Question
dig andymurphybed.com. NS
Answer
andymurphybed.com. 1 NS ns-590.awsdns-09.net.
andymurphybed.com. 1 NS ns-245.awsdns-30.com.
andymurphybed.com. 1 NS ns-1.awsdns-00.com.
andymurphybed.com. 1 NS ns-161.awsdns-20.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0