Apex domains cannot have CNAME records.
Question and response
Question
dig net.Za. NS
Answer
net.za. 4 NS ns5.dns.net.za.
net.za. 4 NS ns2.dns.net.za.
net.za. 4 NS za-ns.anycast.pch.net.
net.za. 4 NS ns2us.dns.business.
Authority
The response has no authority records.
Additional
ns2us.dns.business. 1 A 147.135.106.236
za-ns.anycast.pch.net. 1 A 204.61.216.55
ns2us.dns.business. 1 AAAA 2604:2dc0:200:2eb:0:0:0:2
za-ns.anycast.pch.net. 1 AAAA 2001:500:14:6055:ad:0:0:1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0