info.x5.ru has no NS records.
NS records for this zone are defined at x5.ru.
NS records for this zone are defined at x5.ru.
Question and response
Question
dig info.x5.ru. NS
Answer
The response has no answer records.
Authority
x5.ru. 3600 SOA ns1.x5.ru. hostmaster.x5.ru. 2015045601 1800 600 1209600 3600
Additional
. 0 OPT ; payload 4000, xrcode 0, version 0, flags 0