ns4.exclusivehosting.net has no CNAME records.
Question and response
Question
dig ns4.exclusivehosting.net. NS
Answer
The response has no answer records.
Authority
exclusivehosting.net. 2560 SOA dns1.exclusivehosting.net. hostmaster.exclusivehosting.net. 1773081305 16384 2048 1048576 2560
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0