nsmob1.net.vodafone.it has no NS records.
NS records for this zone are defined at net.vodafone.it.
NS records for this zone are defined at net.vodafone.it.
Question and response
Question
dig nsmob1.net.vodafone.it. NS
Answer
The response has no answer records.
Authority
net.vodafone.it. 900 SOA nsmob1.net.vodafone.it. hostmaster.vodafone.it. 2004105959 10800 3600 2592000 900
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0