Question and response
Question
dig mx1.kubtel.ru. NS
Answer
mx1.kubtel.ru. 3600 NS ns3.kubtel.ru.
mx1.kubtel.ru. 3600 NS ns4.kubtel.ru.
Authority
The response has no authority records.
Additional
. 0 OPT [{Extended_DNS_Error: PROHIBITED}] ; payload 1232, xrcode 0, version 0, flags 0