_sips._tcp.sbcwe4b-test.fastweb.it has no NS records.
NS records for this zone are defined at fastweb.it.
NS records for this zone are defined at fastweb.it.
Question and response
Question
dig _sips._tcp.sbcwe4b-test.fastweb.it. NS
Answer
The response has no answer records.
Authority
fastweb.it. 86400 SOA dns3.fastweb.it. dnsmaster.fastweb.it. 2026030600 10800 900 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0