ns.duohemoglobin.com has no NS records.
NS records for this zone are defined at duohemoglobin.com.
NS records for this zone are defined at duohemoglobin.com.
Question and response
Question
dig ns.duohemoglobin.com. NS
Answer
The response has no answer records.
Authority
duohemoglobin.com. 10800 SOA ns.duohemoglobin.com. kiki\.kwad.gmail.com. 1769616822 10800 3600 604800 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0