mirelle.ping0.RU has no NS records.
NS records for this zone are defined at ping0.RU.
NS records for this zone are defined at ping0.RU.
Question and response
Question
dig mirelle.ping0.RU. NS
Answer
The response has no answer records.
Authority
ping0.ru. 3600 SOA dns1.zolotoff.ru. hostmaster. 45 900 600 86400 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0