smtp.tvnetwork.hu has no NS records.
NS records for this zone are defined at tvnetwork.hu.
NS records for this zone are defined at tvnetwork.hu.
Question and response
Question
dig smtp.tvnetwork.hu. NS
Answer
The response has no answer records.
Authority
tvnetwork.hu. 600 SOA drava.dravanet.hu. postmaster.dravanet.hu. 2025112001 29000 14400 2592000 45600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0