nittedal.tornado-node.net has no CNAME records.
Question and response
Question
dig nittedal.tornado-node.net. NS
Answer
The response has no answer records.
Authority
tornado-node.net. 271 SOA ns.syse.no. hostmaster.syse.no. 50320 10800 1800 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0