smtp3.ex10.biz has no NS records.
NS records for this zone are defined at ex10.biz.
NS records for this zone are defined at ex10.biz.
Question and response
Question
dig smtp3.ex10.biz. NS
Answer
The response has no answer records.
Authority
ex10.biz. 900 SOA prod01.ns.ikoula.com. dns-admin.ikoula.com. 2026022403 14400 3600 1209600 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0