mx.merlion.ru has no NS records.
NS records for this zone are defined at merlion.ru.
NS records for this zone are defined at merlion.ru.
Question and response
Question
dig mx.merlion.ru. NS
Answer
The response has no answer records.
Authority
merlion.ru. 360 SOA ns1.merlion.ru. domains.merlion.ru. 2026021603 3600 900 3600000 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0