i0-h0-s333.p28-nrt.cdngp.net has no NS records.
NS records for this zone are defined at cdngp.net.
NS records for this zone are defined at cdngp.net.
Question and response
Question
dig i0-h0-s333.p28-nrt.cdngp.net. NS
Answer
The response has no answer records.
Authority
cdngp.net. 300 SOA ns1.cdnetdns.net. root.cdngp.net. 2011092055 43200 3600 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0