mailstash.wittwer-it.ch has no NS records.
NS records for this zone are defined at wittwer-it.ch.
NS records for this zone are defined at wittwer-it.ch.
Question and response
Question
dig mailstash.wittwer-it.ch. NS
Answer
The response has no answer records.
Authority
wittwer-it.ch. 180 SOA ns1.onlime.ch. hostmaster.onlime.ch. 2026010700 3600 900 1814400 180
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0