voipproxy1.adobe.com has no NS records.
NS records for this zone are defined at adobe.com.
NS records for this zone are defined at adobe.com.
Question and response
Question
dig voipproxy1.adobe.com. NS
Answer
The response has no answer records.
Authority
adobe.com. 300 SOA exfer-vip-01.corp.adobe.com. hostmaster.adobe.com. 11344 1800 600 2419200 300
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0