exch-lb02.tut.net has no NS records.
NS records for this zone are defined at tut.net.
NS records for this zone are defined at tut.net.
Question and response
Question
dig exch-lb02.tut.net. NS
Answer
The response has no answer records.
Authority
tut.net. 3600 SOA ns1.tut.net. noc.tut.net. 2026031101 3600 600 86400 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0