Apex domains cannot have CNAME records.
Question and response
Question
dig tornado-node.net. NS
Answer
tornado-node.net. 1 NS a.ns.syse.no.
tornado-node.net. 1 NS d.ns.syse.no.
tornado-node.net. 1 NS c.ns.syse.no.
tornado-node.net. 1 NS b.ns.syse.no.
Authority
The response has no authority records.
Additional
a.ns.syse.no. 1 A 195.159.29.140
b.ns.syse.no. 1 A 77.40.237.83
c.ns.syse.no. 1 A 195.159.144.132
d.ns.syse.no. 1 A 109.74.203.158
a.ns.syse.no. 1 AAAA 2001:840:4245:0:0:0:0:8a
b.ns.syse.no. 1 AAAA 2001:840:4245:0:0:0:0:8b
c.ns.syse.no. 1 AAAA 2001:840:4245:0:0:0:0:8c
d.ns.syse.no. 1 AAAA 2a01:7e00:0:0:f03c:91ff:fe84:c710
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0