ns2.tel.cz has no NS records.
NS records for this zone are defined at tel.cz.
NS records for this zone are defined at tel.cz.
Question and response
Question
dig ns2.tel.cz. NS
Answer
The response has no answer records.
Authority
tel.cz. 10800 SOA dns.iol.cz. hostmaster.iol.cz. 2025041439 10800 3600 5184000 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0