ns2.iis5.net has no CNAME records.
Question and response
Question
dig ns2.iis5.net. NS
Answer
The response has no answer records.
Authority
iis5.net. 1571 SOA ns.iis5.net. lovekt.hotmail.com. 156 54000 600 86400 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0