Apex domains cannot have CNAME records.
Question and response
Question
dig netinternet.com.tr. NS
Answer
netinternet.com.tr. 3 NS nitel-1.ni.net.tr.
netinternet.com.tr. 3 NS nitel-2.ni.net.tr.
Authority
The response has no authority records.
Additional
nitel-1.ni.net.tr. 4 A 159.253.40.40
nitel-2.ni.net.tr. 4 A 95.173.191.3
nitel-1.ni.net.tr. 4 AAAA 2a03:2100:0:3:0:0:0:11
nitel-2.ni.net.tr. 4 AAAA 2a03:2100:0:3:0:0:0:12
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0