_spf2.dnamail.fi has no NS records.
NS records for this zone are defined at dnamail.fi.
NS records for this zone are defined at dnamail.fi.
Question and response
Question
dig _spf2.dnamail.fi. NS
Answer
The response has no answer records.
Authority
dnamail.fi. 900 SOA ns1.fv.fi. hostmaster.dnaip.fi. 2025050600 28800 7200 2419200 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0