mail.WHMAIL.RU has no NS records.
NS records for this zone are defined at WHMAIL.RU.
NS records for this zone are defined at WHMAIL.RU.
Question and response
Question
dig mail.WHMAIL.RU. NS
Answer
The response has no answer records.
Authority
WHMAIL.RU. 3600 SOA ns1.webhost1.com. tech.webhost1.com. 2025011606 10800 3600 604800 86400
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0