Apex domains cannot have CNAME records.
Question and response
Question
dig edenorte.gov.do. NS
Answer
edenorte.gov.do. 5 NS ns1.edenorte.com.do.
Authority
The response has no authority records.
Additional
ns1.edenorte.com.do. 5 A 200.88.116.122
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0