mx2.avantel.ru has no NS records.
NS records for this zone are defined at avantel.ru.
NS records for this zone are defined at avantel.ru.
Question and response
Question
dig mx2.avantel.ru. NS
Answer
The response has no answer records.
Authority
avantel.ru. 3600 SOA ns.avantel.ru. support.avantel.ru. 2026021204 3600 1800 43200 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0