ns2.tiscomhosting.net has no CNAME records.
Question and response
Question
dig ns2.tiscomhosting.net. NS
Answer
The response has no answer records.
Authority
tiscomhosting.net. 3703 SOA ns1.tiscomhosting.nl. hostmaster.tiscomhosting.nl. 1337015504 7200 3600 2419200 14400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0