Apex domains cannot have CNAME records.
Question and response
Question
dig finsys.co.nz. NS
Answer
finsys.co.nz. 4 NS ns2.finsys.co.nz.
finsys.co.nz. 4 NS ns1.finsys.co.nz.
Authority
The response has no authority records.
Additional
ns1.finsys.co.nz. 4 A 202.36.68.8
ns2.finsys.co.nz. 4 A 202.36.68.9
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0