vcmail.viewcentral.com has no NS records.
NS records for this zone are defined at viewcentral.com.
NS records for this zone are defined at viewcentral.com.
Question and response
Question
dig vcmail.viewcentral.com. NS
Answer
The response has no answer records.
Authority
viewcentral.com. 300 SOA ns1-37.azure-dns.com. azuredns-hostmaster.microsoft.com. 2016101631 3600 300 1844400 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0