ns8.jdcomputers.com.au has no CNAME records.
Question and response
Question
dig ns8.jdcomputers.com.au. NS
Answer
The response has no answer records.
Authority
jdcomputers.com.au. 10289 SOA dns1.namecheaphosting.com. cpanel.tech.namecheap.com. 1713668161 86400 7200 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0