pexsucpna01.westus.cloudapp.azure.com has no NS records.
NS records for this zone are defined at westus.cloudapp.azure.com.
NS records for this zone are defined at westus.cloudapp.azure.com.
Question and response
Question
dig pexsucpna01.westus.cloudapp.azure.com. NS
Answer
The response has no answer records.
Authority
westus.cloudapp.azure.com. 60 SOA ns1-02.azure-dns.com. msnhst.microsoft.com. 10001 900 300 604800 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0