mail2.tcsasp.ch has no NS records.
NS records for this zone are defined at tcsasp.ch.
NS records for this zone are defined at tcsasp.ch.
Question and response
Question
dig mail2.tcsasp.ch. NS
Answer
The response has no answer records.
Authority
tcsasp.ch. 86400 SOA dns1.ewdns.ch. hostmaster.everyware.ch. 1773334713 10800 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0