Apex domains cannot have CNAME records.
Question and response
Question
dig stinkytoes.com. NS
Answer
stinkytoes.com. 4 NS ns-543.awsdns-03.net.
stinkytoes.com. 4 NS ns-330.awsdns-41.com.
stinkytoes.com. 4 NS ns-1559.awsdns-02.co.uk.
stinkytoes.com. 4 NS ns-1142.awsdns-14.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0