ns2.choopadns.com has no NS records.
NS records for this zone are defined at choopadns.com.
NS records for this zone are defined at choopadns.com.
Question and response
Question
dig ns2.choopadns.com. NS
Answer
The response has no answer records.
Authority
choopadns.com. 600 SOA ns1.choopadns.com. dnsadm.choopa.com. 0 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0