Apex domains cannot have CNAME records.
Question and response
Question
dig fosick.co.za. NS
Answer
fosick.co.za. 5 NS nz01.fosick.co.za.
fosick.co.za. 5 NS ns02.fosick.co.za.
fosick.co.za. 5 NS ns01.fosick.co.za.
fosick.co.za. 5 NS nz02.fosick.co.za.
Authority
The response has no authority records.
Additional
ns01.fosick.co.za. 5 A 41.61.100.10
ns02.fosick.co.za. 5 A 196.43.195.10
nz01.fosick.co.za. 5 A 41.61.100.10
nz02.fosick.co.za. 5 A 196.43.195.10
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0