mx3.web4ce.cz has no NS records.
NS records for this zone are defined at web4ce.cz.
NS records for this zone are defined at web4ce.cz.
Question and response
Question
dig mx3.web4ce.cz. NS
Answer
The response has no answer records.
Authority
web4ce.cz. 7200 SOA ns1.web4ce.cz. domeny.web4ce.cz. 2026030901 28800 7200 1814400 300
Additional
The response has no additional records.