mx2.restream.rt.ru has no NS records.
NS records for this zone are defined at restream.rt.ru.
NS records for this zone are defined at restream.rt.ru.
Question and response
Question
dig mx2.restream.rt.ru. NS
Answer
The response has no answer records.
Authority
restream.rt.ru. 600 SOA ns1.restream.rt.ru. postmaster.restream.rt.ru. 2025102300 28800 7200 2419200 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0