dns3.uct.net.za has no CNAME records.
Question and response
Question
dig dns3.uct.net.za. NS
Answer
The response has no answer records.
Authority
uct.net.za. 5040 SOA dns3.uct.net.za. hostmaster.uct.net.za. 2026012502 28800 7200 604800 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0