Apex domains cannot have CNAME records.
Question and response
Question
dig spd.net.tr. NS
Answer
spd.net.tr. 2 NS ns1.spd.net.tr.
spd.net.tr. 2 NS ns2.spd.net.tr.
Authority
The response has no authority records.
Additional
ns1.spd.net.tr. 2 A 37.123.96.2
ns2.spd.net.tr. 2 A 178.20.231.254
ns1.spd.net.tr. 2 AAAA 2a00:9bc0:0:0:0:0:0:2
ns2.spd.net.tr. 2 AAAA 2a00:9bc0:0:0:0:0:0:3
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0