dil.datainfosys.net has no CNAME records.
Question and response
Question
dig dil.datainfosys.net. NS
Answer
The response has no answer records.
Authority
datainfosys.net. 3521 SOA ns1.dildns.com. nishat.dil.in. 2012051005 3600 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0