ns.cox.net has no NS records.
NS records for this zone are defined at cox.net.
NS records for this zone are defined at cox.net.
Question and response
Question
dig ns.cox.net. NS
Answer
The response has no answer records.
Authority
cox.net. 3600 SOA dukensumpov1z.services.cox.net. hostmaster.cox.net. 781212129 28800 7200 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0