Apex domains cannot have CNAME records.
Question and response
Question
dig macrolan.co.za. NS
Answer
macrolan.co.za. 5 NS ns1.macrolan.co.za.
macrolan.co.za. 5 NS ns3.macrolan.co.za.
macrolan.co.za. 5 NS ns2.macrolan.co.za.
Authority
The response has no authority records.
Additional
ns1.macrolan.co.za. 5 A 41.222.225.10
ns2.macrolan.co.za. 5 A 41.222.225.14
ns3.macrolan.co.za. 5 A 41.222.227.5
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0