ns2.instradns.com has no NS records.
NS records for this zone are defined at instradns.com.
NS records for this zone are defined at instradns.com.
Question and response
Question
dig ns2.instradns.com. NS
Answer
The response has no answer records.
Authority
instradns.com. 600 SOA ns1.instradns.com. admin.instra.com. 2014060302 2008052907 28800 7200 604800
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0