Apex domains cannot have CNAME records.
Question and response
Question
dig spideraf.com. NS
Answer
spideraf.com. 5 NS ns-1093.awsdns-08.org.
spideraf.com. 5 NS ns-238.awsdns-29.com.
spideraf.com. 5 NS ns-1013.awsdns-62.net.
spideraf.com. 5 NS ns-1757.awsdns-27.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0