Apex domains cannot have CNAME records.
Question and response
Question
dig tahminligi.com. NS
Answer
tahminligi.com. 5 NS ns-1633.awsdns-12.co.uk.
tahminligi.com. 5 NS ns-1277.awsdns-31.org.
tahminligi.com. 5 NS ns-207.awsdns-25.com.
tahminligi.com. 5 NS ns-1662.awsdns-15.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0