fast.ddns.com.au has no NS records.
NS records for this zone are defined at ddns.com.au.
NS records for this zone are defined at ddns.com.au.
Question and response
Question
dig fast.ddns.com.au. NS
Answer
The response has no answer records.
Authority
ddns.com.au. 900 SOA dns4.quick.net.au. domains.ddns.com.au. 2026021902 10800 900 1209600 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0