mx.seo.it has no NS records.
NS records for this zone are defined at seo.it.
NS records for this zone are defined at seo.it.
Question and response
Question
dig mx.seo.it. NS
Answer
The response has no answer records.
Authority
seo.it. 900 SOA ns20.tuonomeregistrar.net. tech.tuonomeregistrar.net. 2025022701 86400 7200 2592000 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0