Apex domains cannot have CNAME records.
Question and response
Question
dig mupzarlent.com. NS
Answer
mupzarlent.com. 5 NS ns2.mupzarlent.com.
mupzarlent.com. 5 NS ns1.mupzarlent.com.
Authority
The response has no authority records.
Additional
ns1.mupzarlent.com. 5 A 67.222.143.182
ns2.mupzarlent.com. 5 A 45.82.66.141
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0