mail.KVMKA.RU has no NS records.
NS records for this zone are defined at KVMKA.RU.
NS records for this zone are defined at KVMKA.RU.
Question and response
Question
dig mail.KVMKA.RU. NS
Answer
The response has no answer records.
Authority
KVMKA.RU. 1800 SOA chad.ns.cloudflare.com. dns.cloudflare.com. 2394510369 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0