_spfstrict.interhost.it has no NS records.
NS records for this zone are defined at interhost.it.
NS records for this zone are defined at interhost.it.
Question and response
Question
dig _spfstrict.interhost.it. NS
Answer
The response has no answer records.
Authority
interhost.it. 10800 SOA ns1.dnsitalia.net. info.interhost.it. 2026022300 3600 900 86400 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0