brain.holzmaster.com has no NS records.
NS records for this zone are defined at holzmaster.com.
NS records for this zone are defined at holzmaster.com.
Question and response
Question
dig brain.holzmaster.com. NS
Answer
The response has no answer records.
Authority
holzmaster.com. 3600 SOA dns.holzmaster.com. hostmaster.holzmaster.com. 1885074746 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0