smtp2.ficolo.net has no NS records.
NS records for this zone are defined at ficolo.net.
NS records for this zone are defined at ficolo.net.
Question and response
Question
dig smtp2.ficolo.net. NS
Answer
The response has no answer records.
Authority
ficolo.net. 3508 SOA dns1.ficolo.net. hostmaster.ficolo.net. 2020091400 28800 7200 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0