Apex domains cannot have CNAME records.
Question and response
Question
dig enlacevision.com. NS
Answer
enlacevision.com. 5 NS ns2.enlacevision.com.
enlacevision.com. 5 NS ns1.enlacevision.com.
enlacevision.com. 5 NS ns4.enlacevision.com.
enlacevision.com. 5 NS ns3.enlacevision.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0