Apex domains cannot have CNAME records.
Question and response
Question
dig yafuae.net. NS
Answer
yafuae.net. 5 NS ns-1293.awsdns-33.org.
yafuae.net. 5 NS ns-940.awsdns-53.net.
yafuae.net. 5 NS ns-869.awsdns-44.net.
yafuae.net. 5 NS ns-1900.awsdns-45.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0