ctrl.corp.mchost.ru has no NS records.
NS records for this zone are defined at corp.mchost.ru.
NS records for this zone are defined at corp.mchost.ru.
Question and response
Question
dig ctrl.corp.mchost.ru. NS
Answer
The response has no answer records.
Authority
corp.mchost.ru. 3600 SOA dns1.mchost.ru. info.mchost.ru. 2023062202 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0