Apex domains cannot have CNAME records.
Question and response
Question
dig webgraphicart.com. NS
Answer
webgraphicart.com. 5 NS ns-1318.awsdns-36.org.
webgraphicart.com. 5 NS ns-986.awsdns-59.net.
webgraphicart.com. 5 NS ns-206.awsdns-25.com.
webgraphicart.com. 5 NS ns-392.awsdns-49.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0