Apex domains cannot have CNAME records.
Question and response
Question
dig etapa.net.ec. NS
Answer
etapa.net.ec. 5 NS kai.ns.cloudflare.com.
etapa.net.ec. 5 NS alina.ns.cloudflare.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0