mta00.mucix.net has no NS records.
NS records for this zone are defined at mucix.net.
NS records for this zone are defined at mucix.net.
Question and response
Question
dig mta00.mucix.net. NS
Answer
The response has no answer records.
Authority
mucix.net. 600 SOA dns0.noris.net. hostmaster.noris.net.mucix.net. 1772994423 86400 86400 2419200 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0