mx.wolfnet.cz has no NS records.
NS records for this zone are defined at wolfnet.cz.
NS records for this zone are defined at wolfnet.cz.
Question and response
Question
dig mx.wolfnet.cz. NS
Answer
The response has no answer records.
Authority
wolfnet.cz. 300 SOA ns1.wolfnet.cz. hostmaster.wolfnet.cz. 2026022115 600 300 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0