_spf.elmecnet.net has no NS records.
NS records for this zone are defined at elmecnet.net.
NS records for this zone are defined at elmecnet.net.
Question and response
Question
dig _spf.elmecnet.net. NS
Answer
The response has no answer records.
Authority
elmecnet.net. 900 SOA ns1.register.it. hostmaster.register.it. 2026012003 10800 3600 604800 86400
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0