dns0.mtu.ru has no NS records.
NS records for this zone are defined at mtu.ru.
NS records for this zone are defined at mtu.ru.
Question and response
Question
dig dns0.mtu.ru. NS
Answer
The response has no answer records.
Authority
mtu.ru. 600 SOA dns0.mtu.ru. dns.mts.ru. 2026030600 1200 60 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0