Apex domains cannot have CNAME records.
Question and response
Question
dig 7lmalshmaal.com. NS
Answer
7lmalshmaal.com. 5 NS ns-440.awsdns-55.com.
7lmalshmaal.com. 5 NS ns-249.awsdns-31.com.
7lmalshmaal.com. 5 NS ns-1519.awsdns-61.org.
7lmalshmaal.com. 5 NS ns-1457.awsdns-54.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0