mailfilter01.hatteland.com has no NS records.
NS records for this zone are defined at hatteland.com.
NS records for this zone are defined at hatteland.com.
Question and response
Question
dig mailfilter01.hatteland.com. NS
Answer
The response has no answer records.
Authority
hatteland.com. 3600 SOA ns1.hyp.net. hostmaster.domeneshop.no. 1773302352 14400 3600 1209600 3600
Additional
. 0 OPT ; payload 1400, xrcode 0, version 0, flags 0