smtp11.kubangsm.ru has no NS records.
NS records for this zone are defined at kubangsm.ru.
NS records for this zone are defined at kubangsm.ru.
Question and response
Question
dig smtp11.kubangsm.ru. NS
Answer
The response has no answer records.
Authority
kubangsm.ru. 900 SOA ns2.mts.ru. dns.mts.ru. 2026031901 10800 1800 604800 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0