www.sd.cox.net has no NS records.
NS records for this zone are defined at sd.cox.net.
NS records for this zone are defined at sd.cox.net.
Question and response
Question
dig www.sd.cox.net. NS
Answer
The response has no answer records.
Authority
sd.cox.net. 86400 SOA dukensumpov1z.services.cox.net. hostmaster.cox.net. 781212462 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0