bearbone.twobears.cz has no NS records.
NS records for this zone are defined at twobears.cz.
NS records for this zone are defined at twobears.cz.
Question and response
Question
dig bearbone.twobears.cz. NS
Answer
The response has no answer records.
Authority
twobears.cz. 2560 SOA ns.cybersales.cz. hostmaster.cybersales.cz. 1774483416 16384 1800 1048576 2560
Additional
The response has no additional records.