Apex domains cannot have CNAME records.
Question and response
Question
dig colegiocreando.edu.do. NS
Answer
colegiocreando.edu.do. 4 NS ns9060.banahosting.com.
colegiocreando.edu.do. 4 NS ns9061.banahosting.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0