sender40.mlgnr.ru has no NS records.
NS records for this zone are defined at mlgnr.ru.
NS records for this zone are defined at mlgnr.ru.
Question and response
Question
dig sender40.mlgnr.ru. NS
Answer
The response has no answer records.
Authority
mlgnr.ru. 60 SOA a.ns.selectel.ru. support.selectel.ru. 2026030301 10800 3600 604800 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0