Apex domains cannot have CNAME records.
Question and response
Question
dig cyberlogic.co.za. NS
Answer
cyberlogic.co.za. 4 NS ns2.enetworks.net.
cyberlogic.co.za. 4 NS ns1.enetworks.co.za.
cyberlogic.co.za. 4 NS ns4.enetworks.net.
cyberlogic.co.za. 4 NS ns3.enetworks.co.za.
Authority
The response has no authority records.
Additional
ns1.enetworks.co.za. 4 A 102.164.121.121
ns2.enetworks.net. 4 A 45.220.159.159
ns3.enetworks.co.za. 4 A 41.222.55.21
ns4.enetworks.net. 4 A 139.162.222.88
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0