aragorn.kav.cas.cz has no NS records.
NS records for this zone are defined at kav.cas.cz.
NS records for this zone are defined at kav.cas.cz.
Question and response
Question
dig aragorn.kav.cas.cz. NS
Answer
The response has no answer records.
Authority
kav.cas.cz. 600 SOA academy.cas.cz. root.academy.cas.cz. 3418 150 300 604800 600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0