_spf.ilger.com has no NS records.
NS records for this zone are defined at ilger.com.
NS records for this zone are defined at ilger.com.
Question and response
Question
dig _spf.ilger.com. NS
Answer
The response has no answer records.
Authority
ilger.com. 900 SOA ns1.register.it. hostmaster.register.it. 2025122201 10800 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0