Apex domains cannot have CNAME records.
Question and response
Question
dig crossware.co.nz. NS
Answer
crossware.co.nz. 5 NS ns-1045.awsdns-02.org.
crossware.co.nz. 5 NS ns-1987.awsdns-56.co.uk.
crossware.co.nz. 5 NS ns-180.awsdns-22.com.
crossware.co.nz. 5 NS ns-841.awsdns-41.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0