Apex domains cannot have CNAME records.
Question and response
Question
dig teratarhely.hu. NS
Answer
teratarhely.hu. 2 NS chan.ns.cloudflare.com.
teratarhely.hu. 2 NS evan.ns.cloudflare.com.
Authority
The response has no authority records.
Additional
chan.ns.cloudflare.com. 3 A 108.162.192.82
chan.ns.cloudflare.com. 3 A 172.64.32.82
chan.ns.cloudflare.com. 3 A 173.245.58.82
evan.ns.cloudflare.com. 3 A 108.162.193.165
evan.ns.cloudflare.com. 3 A 172.64.33.165
evan.ns.cloudflare.com. 3 A 173.245.59.165
chan.ns.cloudflare.com. 3 AAAA 2606:4700:50:0:0:0:adf5:3a52
chan.ns.cloudflare.com. 3 AAAA 2803:f800:50:0:0:0:6ca2:c052
chan.ns.cloudflare.com. 3 AAAA 2a06:98c1:50:0:0:0:ac40:2052
evan.ns.cloudflare.com. 3 AAAA 2606:4700:58:0:0:0:adf5:3ba5
evan.ns.cloudflare.com. 3 AAAA 2803:f800:50:0:0:0:6ca2:c1a5
evan.ns.cloudflare.com. 3 AAAA 2a06:98c1:50:0:0:0:ac40:21a5
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0