www.eserver.ru has no NS records.
NS records for this zone are defined at eserver.ru.
NS records for this zone are defined at eserver.ru.
Question and response
Question
dig www.eserver.ru. NS
Answer
The response has no answer records.
Authority
eserver.ru. 1800 SOA ns1.ru.eserver.net. hostmaster.eserver.net. 1753819781 7200 3600 604800 1800
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0