Apex domains cannot have CNAME records.
Question and response
Question
dig spandancedu.org. NS
Answer
spandancedu.org. 5 NS ns.spandancedu.org.
spandancedu.org. 5 NS ns1.plesk-web25.webhostbox.net.
spandancedu.org. 5 NS ns2.plesk-web25.webhostbox.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0