ns1.dcvolia.com has no NS records.
NS records for this zone are defined at dcvolia.com.
NS records for this zone are defined at dcvolia.com.
Question and response
Question
dig ns1.dcvolia.com. NS
Answer
The response has no answer records.
Authority
dcvolia.com. 3600 SOA ns0.dc.volia.com. hostmaster.dc.volia.com. 2018092803 28800 7200 604800 86400
Additional
The response has no additional records.