16.o9.mta.vikomail.net has no NS records.
NS records for this zone are defined at vikomail.net.
NS records for this zone are defined at vikomail.net.
Question and response
Question
dig 16.o9.mta.vikomail.net. NS
Answer
The response has no answer records.
Authority
vikomail.net. 3600 SOA dns3.elogia.net. hostmaster.elogia.net. 2015073927 21600 3600 2419200 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0