Apex domains cannot have CNAME records.
Question and response
Question
dig midwayusa.com. NS
Answer
midwayusa.com. 5 NS ns-25.awsdns-03.com.
midwayusa.com. 5 NS ns-1899.awsdns-45.co.uk.
midwayusa.com. 5 NS ns-1486.awsdns-57.org.
midwayusa.com. 5 NS ns-728.awsdns-27.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0