ssdf.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 0000-ssdf-t6aBr3r4-kiv.mgmt.fi.ficolo.net. NS
Answer
The response has no answer records.
Authority
mgmt.fi.ficolo.net. 3600 SOA dns1.ficolo.net. hostmaster.ficolo.net. 2020100601 28800 7200 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0