vmail.voip.sockettelecom.com has no NS records.
NS records for this zone are defined at sockettelecom.com.
NS records for this zone are defined at sockettelecom.com.
Question and response
Question
dig vmail.voip.sockettelecom.com. NS
Answer
The response has no answer records.
Authority
sockettelecom.com. 43200 SOA ns1.socket.net. dns.socket.net. 2026021102 28800 7200 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0