Apex domains cannot have CNAME records.
Question and response
Question
dig wostec.com.mx. NS
Answer
wostec.com.mx. 5 NS ns2.wixdns.net.
wostec.com.mx. 5 NS ns3.wixdns.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0