Apex domains cannot have CNAME records.
Question and response
Question
dig supremecenter.com. NS
Answer
supremecenter.com. 1 NS dns2.supremecenter.com.
supremecenter.com. 1 NS dns3.supremecenter.com.
supremecenter.com. 1 NS dns4.supremecenter.com.
supremecenter.com. 1 NS dns1.supremecenter.com.
Authority
The response has no authority records.
Additional
dns1.supremecenter.com. 1 A 162.210.102.140
dns2.supremecenter.com. 1 A 198.23.56.4
dns3.supremecenter.com. 1 A 94.136.171.52
dns4.supremecenter.com. 1 A 185.196.102.2
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0