mail.nktelco.net has no NS records.
NS records for this zone are defined at nktelco.net.
NS records for this zone are defined at nktelco.net.
Question and response
Question
dig mail.nktelco.net. NS
Answer
The response has no answer records.
Authority
nktelco.net. 300 SOA ns1.nktelco.net. dns-admin.nktelco.net. 2025080101 10800 3600 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0