ns2.extrim.ru has no NS records.
NS records for this zone are defined at extrim.ru.
NS records for this zone are defined at extrim.ru.
Question and response
Question
dig ns2.extrim.ru. NS
Answer
The response has no answer records.
Authority
extrim.ru. 86400 SOA ns0.mirasystem.net. admins.mirasystem.net. 2007096215 3600 1800 604800 86400
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0