server.geoscience.org.za has no CNAME records.
Question and response
Question
dig server.geoscience.org.za. NS
Answer
The response has no answer records.
Authority
geoscience.org.za. 245 SOA ns1.lexsynergy.net. dnsmaster.lexsynergy.com. 54 302400 3600 1209600 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0