Apex domains cannot have CNAME records.
Question and response
Question
dig businessolver.com. NS
Answer
businessolver.com. 5 NS ns-1306.awsdns-35.org.
businessolver.com. 5 NS ns-1833.awsdns-37.co.uk.
businessolver.com. 5 NS ns-217.awsdns-27.com.
businessolver.com. 5 NS ns-863.awsdns-43.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0