ans2.les.net has no CNAME records.
Question and response
Question
dig ans2.les.net. NS
Answer
The response has no answer records.
Authority
les.net. 130 SOA ns1.les.net. arin.les.net. 1390 60 60 7257600 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0