Apex domains cannot have CNAME records.
Question and response
Question
dig speedingdoge.com. NS
Answer
speedingdoge.com. 5 NS ns-602.awsdns-11.net.
speedingdoge.com. 5 NS ns-1124.awsdns-12.org.
speedingdoge.com. 5 NS ns-854.awsdns-42.net.
speedingdoge.com. 5 NS ns-1341.awsdns-39.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0