idefix.imp.ch has no NS records.
NS records for this zone are defined at imp.ch.
NS records for this zone are defined at imp.ch.
Question and response
Question
dig idefix.imp.ch. NS
Answer
The response has no answer records.
Authority
imp.ch. 3600 SOA ns1.imp.ch. noc.imp.ch. 2602200004 3600 3600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0