dns.grantbranding.com has no NS records.
NS records for this zone are defined at grantbranding.com.
NS records for this zone are defined at grantbranding.com.
Question and response
Question
dig dns.grantbranding.com. NS
Answer
The response has no answer records.
Authority
grantbranding.com. 3600 SOA dns.grantbranding.com. hostmaster.grantbranding.com. 1383511888 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0