Apex domains cannot have CNAME records.
Question and response
Question
dig elsalonsalsero.com. NS
Answer
elsalonsalsero.com. 5 NS ns-894.awsdns-47.net.
elsalonsalsero.com. 5 NS ns-3.awsdns-00.com.
elsalonsalsero.com. 5 NS ns-367.awsdns-45.com.
elsalonsalsero.com. 5 NS ns-1407.awsdns-47.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0