Apex domains cannot have CNAME records.
Question and response
Question
dig mojsite.com. NS
Answer
mojsite.com. 3 NS ns1.phg.hr.
mojsite.com. 3 NS ns3.phg.hr.
mojsite.com. 3 NS ns2.phg.hr.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0