dns02.fetnet.net has no NS records.
NS records for this zone are defined at fetnet.net.
NS records for this zone are defined at fetnet.net.
Question and response
Question
dig dns02.fetnet.net. NS
Answer
The response has no answer records.
Authority
fetnet.net. 3600 SOA dns.fetnet.net. ackadmin.fetnet.net. 2016051941 900 600 1209600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0