Apex domains cannot have CNAME records.
Question and response
Question
dig ozlasteksan.com. NS
Answer
ozlasteksan.com. 5 NS ns1.ozlasteksan.com.
ozlasteksan.com. 5 NS ns2.ozlasteksan.com.
Authority
The response has no authority records.
Additional
ns1.ozlasteksan.com. 5 A 5.135.50.148
ns2.ozlasteksan.com. 5 A 192.227.72.161
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0