Apex domains cannot have CNAME records.
Question and response
Question
dig consupermiso.com. NS
Answer
consupermiso.com. 5 NS dns2.elogia.net.
consupermiso.com. 5 NS dns1.elogia.net.
Authority
The response has no authority records.
Additional
dns1.elogia.net. 5 A 82.223.182.188
dns2.elogia.net. 5 A 82.223.183.189
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0