mx2.telehouse.hc.ru has no NS records.
NS records for this zone are defined at telehouse.hc.ru.
NS records for this zone are defined at telehouse.hc.ru.
Question and response
Question
dig mx2.telehouse.hc.ru. NS
Answer
The response has no answer records.
Authority
telehouse.hc.ru. 3600 SOA ns.caravan.ru. dnsmaster.caravan.ru. 2022082222 7200 3600 43200 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0