ns3.avvanta.com has no CNAME records.
Question and response
Question
dig ns3.avvanta.com. NS
Answer
The response has no answer records.
Authority
avvanta.com. 4583 SOA ns1.avvanta.com. hostmast.ns1.avvanta.com. 2026022602 10800 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0