Apex domains cannot have CNAME records.
Question and response
Question
dig businessexprezz.com. NS
Answer
businessexprezz.com. 5 NS ns2.businessexprezz.com.
businessexprezz.com. 5 NS ns1.businessexprezz.com.
Authority
The response has no authority records.
Additional
ns1.businessexprezz.com. 5 A 202.6.161.52
ns2.businessexprezz.com. 5 A 202.6.160.35
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0