mail.sibpgt.ru has no NS records.
NS records for this zone are defined at sibpgt.ru.
NS records for this zone are defined at sibpgt.ru.
Question and response
Question
dig mail.sibpgt.ru. NS
Answer
The response has no answer records.
Authority
sibpgt.ru. 600 SOA ns4-cloud.nic.ru. sibpgt.bk.ru. 2023091240 1440 36000 2592000 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0