Apex domains cannot have CNAME records.
Question and response
Question
dig thebestsandwichfranchise.com. NS
Answer
thebestsandwichfranchise.com. 4 NS ns2.thebestsandwichfranchise.com.
thebestsandwichfranchise.com. 4 NS ns1.thebestsandwichfranchise.com.
Authority
The response has no authority records.
Additional
ns1.thebestsandwichfranchise.com. 4 A 173.252.193.170
ns2.thebestsandwichfranchise.com. 4 A 173.252.193.172
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0