Apex domains cannot have CNAME records.
Question and response
Question
dig ttbayi.com.tr. NS
Answer
ttbayi.com.tr. 3 NS ns1.ttidc.com.tr.
ttbayi.com.tr. 3 NS ns2.ttidc.com.tr.
Authority
The response has no authority records.
Additional
ns1.ttidc.com.tr. 3 A 212.175.13.34
ns2.ttidc.com.tr. 3 A 212.175.13.35
ns1.ttidc.com.tr. 3 AAAA 2a01:358:5110:0:0:0:2:2
ns2.ttidc.com.tr. 3 AAAA 2a01:358:5110:0:0:0:2:3
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0