ns2.omnisdns.net has no NS records.
NS records for this zone are defined at omnisdns.net.
NS records for this zone are defined at omnisdns.net.
Question and response
Question
dig ns2.omnisdns.net. NS
Answer
The response has no answer records.
Authority
omnisdns.net. 900 SOA primary.guardeddns.net. dns-admin.guardeddns.net. 111 28800 450 1209600 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0