Apex domains cannot have CNAME records.
Question and response
Question
dig nexon.com.au. NS
Answer
nexon.com.au. 3 NS a7-66.akam.net.
nexon.com.au. 3 NS a28-66.akam.net.
nexon.com.au. 3 NS a1-135.akam.net.
nexon.com.au. 3 NS a4-66.akam.net.
nexon.com.au. 3 NS a2-67.akam.net.
nexon.com.au. 3 NS a9-66.akam.net.
Authority
The response has no authority records.
Additional
a2-67.akam.net. 3 A 95.100.174.67
a4-66.akam.net. 3 A 72.246.46.66
a7-66.akam.net. 3 A 23.61.199.66
a1-135.akam.net. 3 A 193.108.91.135
a28-66.akam.net. 3 A 95.100.173.66
a2-67.akam.net. 3 AAAA 2600:1480:7000:0:0:0:0:43
a4-66.akam.net. 3 AAAA 2600:1480:9000:0:0:0:0:42
a7-66.akam.net. 3 AAAA 2600:1406:32:0:0:0:0:42
a1-135.akam.net. 3 AAAA 2600:1401:2:0:0:0:0:87
a28-66.akam.net. 3 AAAA 2600:1480:d800:0:0:0:0:42
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0