mx2.plnfilter.fi has no NS records.
NS records for this zone are defined at plnfilter.fi.
NS records for this zone are defined at plnfilter.fi.
Question and response
Question
dig mx2.plnfilter.fi. NS
Answer
The response has no answer records.
Authority
plnfilter.fi. 3600 SOA ns1.planeetta.net. hostmaster.planeetta.net. 2023120500 7200 3600 604800 3600
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0