Apex domains cannot have CNAME records.
Question and response
Question
dig artkhlish.com. NS
Answer
artkhlish.com. 5 NS ns-1826.awsdns-36.co.uk.
artkhlish.com. 5 NS ns-515.awsdns-00.net.
artkhlish.com. 5 NS ns-203.awsdns-25.com.
artkhlish.com. 5 NS ns-748.awsdns-29.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0