relay02.smarthome.rt.ru has no NS records.
NS records for this zone are defined at smarthome.rt.ru.
NS records for this zone are defined at smarthome.rt.ru.
Question and response
Question
dig relay02.smarthome.rt.ru. NS
Answer
The response has no answer records.
Authority
smarthome.rt.ru. 300 SOA ns5.o7.com. admin.o7.com. 248 600 10800 2419200 600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0