mail.hnet.RU has no NS records.
NS records for this zone are defined at hnet.RU.
NS records for this zone are defined at hnet.RU.
Question and response
Question
dig mail.hnet.RU. NS
Answer
The response has no answer records.
Authority
hnet.ru. 3600 SOA ns.nsk.ru. hostmaster.nsk.ru. 2026012200 3600 900 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0