Apex domains cannot have CNAME records.
Question and response
Question
dig muradiyebilimselalesi.com. NS
Answer
muradiyebilimselalesi.com. 1 NS ns-489.awsdns-61.com.
muradiyebilimselalesi.com. 1 NS ns-1987.awsdns-56.co.uk.
muradiyebilimselalesi.com. 1 NS ns-1363.awsdns-42.org.
muradiyebilimselalesi.com. 1 NS ns-688.awsdns-22.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0