ns3.trunkoz.com has no CNAME records.
Question and response
Question
dig ns3.trunkoz.com. NS
Answer
The response has no answer records.
Authority
trunkoz.com. 2753 SOA ns1.trunkoz.com. hostmaster.trunkoz.com. 2464 900 600 86400 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0