Apex domains cannot have CNAME records.
Question and response
Question
dig itespf.edu.do. NS
Answer
itespf.edu.do. 4 NS rose.ns.cloudflare.com.
itespf.edu.do. 4 NS edward.ns.cloudflare.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0