ns2.optusnet.com.au has no CNAME records.
Question and response
Question
dig ns2.optusnet.com.au. NS
Answer
The response has no answer records.
Authority
optusnet.com.au. 3600 SOA ns1.optusnet.com.au. hostmaster.optusnet.com.au. 2026022500 3600 1800 3600000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0