Apex domains cannot have CNAME records.
Question and response
Question
dig bacskiskun.hu. NS
Answer
bacskiskun.hu. 5 NS ns4.loom.hu.
bacskiskun.hu. 5 NS ns5.loom.hu.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0