Apex domains cannot have CNAME records.
Question and response
Question
dig asesoriaservibascuenca.com. NS
Answer
asesoriaservibascuenca.com. 5 NS ns2.asesoriaservibascuenca.com.
asesoriaservibascuenca.com. 5 NS ns1.asesoriaservibascuenca.com.
Authority
The response has no authority records.
Additional
ns1.asesoriaservibascuenca.com. 5 A 216.108.237.9
ns2.asesoriaservibascuenca.com. 5 A 216.108.237.61
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0