Apex domains cannot have CNAME records.
Question and response
Question
dig smlydlv1.net. NS
Answer
smlydlv1.net. 5 NS ns-1098.awsdns-09.org.
smlydlv1.net. 5 NS ns-426.awsdns-53.com.
smlydlv1.net. 5 NS ns-742.awsdns-28.net.
smlydlv1.net. 5 NS ns-1679.awsdns-17.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0