ssoneweb006.telstra.com has no NS records.
NS records for this zone are defined at telstra.com.
NS records for this zone are defined at telstra.com.
Question and response
Question
dig ssoneweb006.telstra.com. NS
Answer
The response has no answer records.
Authority
telstra.com. 900 SOA adns05.bigpond.com. hostmaster.telstra.net. 2026022401 7200 1800 7200000 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0