mx.VKS-IT.RU has no NS records.
NS records for this zone are defined at VKS-IT.RU.
NS records for this zone are defined at VKS-IT.RU.
Question and response
Question
dig mx.VKS-IT.RU. NS
Answer
The response has no answer records.
Authority
VKS-IT.RU. 300 SOA ns1.beget.com. hostmaster.beget.com. 1684715509 300 600 86400 300
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0