ironport2-1.corpnet.cz has no NS records.
NS records for this zone are defined at corpnet.cz.
NS records for this zone are defined at corpnet.cz.
Question and response
Question
dig ironport2-1.corpnet.cz. NS
Answer
The response has no answer records.
Authority
corpnet.cz. 3600 SOA ns.corpnet.cz. root.ns.corpnet.cz. 2026022401 7200 3600 604800 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0