mail2.fim.ch has no NS records.
NS records for this zone are defined at fim.ch.
NS records for this zone are defined at fim.ch.
Question and response
Question
dig mail2.fim.ch. NS
Answer
The response has no answer records.
Authority
fim.ch. 10800 SOA ns1.gandi.net. hostmaster.gandi.net. 1772064000 10800 3600 604800 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0