ns5.comcastbusiness.net has no NS records.
NS records for this zone are defined at comcastbusiness.net.
NS records for this zone are defined at comcastbusiness.net.
Question and response
Question
dig ns5.comcastbusiness.net. NS
Answer
The response has no answer records.
Authority
comcastbusiness.net. 900 SOA ns.comcastbusiness.net. domregtech.comcastonline.com. 2008113814 7200 300 604800 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0