Apex domains cannot have CNAME records.
Question and response
Question
dig idoce.edu.do. NS
Answer
idoce.edu.do. 2 NS ns7062.banahosting.com.
idoce.edu.do. 2 NS ns7061.banahosting.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0