Apex domains cannot have CNAME records.
Question and response
Question
dig imepacademy.edu.do. NS
Answer
imepacademy.edu.do. 1 NS ns4.hostinger.es.
imepacademy.edu.do. 1 NS ns2.hostinger.es.
imepacademy.edu.do. 1 NS ns1.hostinger.es.
imepacademy.edu.do. 1 NS ns3.hostinger.es.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0