Apex domains cannot have CNAME records.
Question and response
Question
dig cozan.co.za. NS
Answer
cozan.co.za. 5 NS buck.ns.cloudflare.com.
cozan.co.za. 5 NS eva.ns.cloudflare.com.
Authority
The response has no authority records.
Additional
eva.ns.cloudflare.com. 1 A 108.162.192.114
eva.ns.cloudflare.com. 1 A 172.64.32.114
eva.ns.cloudflare.com. 1 A 173.245.58.114
buck.ns.cloudflare.com. 1 A 108.162.193.78
buck.ns.cloudflare.com. 1 A 172.64.33.78
buck.ns.cloudflare.com. 1 A 173.245.59.78
eva.ns.cloudflare.com. 1 AAAA 2606:4700:50:0:0:0:adf5:3a72
eva.ns.cloudflare.com. 1 AAAA 2803:f800:50:0:0:0:6ca2:c072
eva.ns.cloudflare.com. 1 AAAA 2a06:98c1:50:0:0:0:ac40:2072
buck.ns.cloudflare.com. 1 AAAA 2606:4700:58:0:0:0:adf5:3b4e
buck.ns.cloudflare.com. 1 AAAA 2803:f800:50:0:0:0:6ca2:c14e
buck.ns.cloudflare.com. 1 AAAA 2a06:98c1:50:0:0:0:ac40:214e
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0