ns2.fastfone.info has no NS records.
NS records for this zone are defined at fastfone.info.
NS records for this zone are defined at fastfone.info.
Question and response
Question
dig ns2.fastfone.info. NS
Answer
The response has no answer records.
Authority
fastfone.info. 86400 SOA ns1.fastfone.it. root.ns1.fastfone.it. 202305215 28800 7200 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0