Apex domains cannot have CNAME records.
Question and response
Question
dig logos.edu.do. NS
Answer
logos.edu.do. 5 NS ns12.dnetnoc.net.
logos.edu.do. 5 NS ns11.dnetnoc.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0