mx1.micso.it has no NS records.
NS records for this zone are defined at micso.it.
NS records for this zone are defined at micso.it.
Question and response
Question
dig mx1.micso.it. NS
Answer
The response has no answer records.
Authority
micso.it. 300 SOA ns1.micso.it. hostmaster.micso.it. 2026022001 600 300 2592000 300
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0