oz.sopranodesign.com has no NS records.
NS records for this zone are defined at sopranodesign.com.
NS records for this zone are defined at sopranodesign.com.
Question and response
Question
dig oz.sopranodesign.com. NS
Answer
The response has no answer records.
Authority
sopranodesign.com. 180 SOA ns20.digicertdns.com. dns.digicertdns.com. 2009517345 43200 3600 1209600 180
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0