briefkasten.gensonline.eu has no NS records.
NS records for this zone are defined at gensonline.eu.
NS records for this zone are defined at gensonline.eu.
Question and response
Question
dig briefkasten.gensonline.eu. NS
Answer
The response has no answer records.
Authority
gensonline.eu. 60 SOA moon.gensonline.eu. rainer.gensonline.eu. 173389 1800 600 3600000 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0