default._domainkey.c2.hu has no NS records.
NS records for this zone are defined at c2.hu.
NS records for this zone are defined at c2.hu.
Question and response
Question
dig default._domainkey.c2.hu. NS
Answer
The response has no answer records.
Authority
c2.hu. 300 SOA ns1.hmx.hu. dnsadmin.mail.hmx.hu. 2019090634 86400 7200 3600000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0