mx3.selectel.ru has no NS records.
NS records for this zone are defined at selectel.ru.
NS records for this zone are defined at selectel.ru.
Question and response
Question
dig mx3.selectel.ru. NS
Answer
The response has no answer records.
Authority
selectel.ru. 60 SOA a.ns.selectel.ru. support.selectel.ru. 2026022204 10800 3600 604800 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0