ns4.denic.net has no NS records.
NS records for this zone are defined at denic.net.
NS records for this zone are defined at denic.net.
Question and response
Question
dig ns4.denic.net. NS
Answer
The response has no answer records.
Authority
denic.net. 1800 SOA ns1.denic.de. dns-operations.denic.de. 1772630192 10800 1800 3024000 1800
Additional
. 0 OPT ; payload 1452, xrcode 0, version 0, flags 0