dns.metroergon.com has no NS records.
NS records for this zone are defined at metroergon.com.
NS records for this zone are defined at metroergon.com.
Question and response
Question
dig dns.metroergon.com. NS
Answer
The response has no answer records.
Authority
metroergon.com. 3600 SOA dns.metroergon.com. hostmaster.metroergon.com. 1800989870 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0