mail.htctech.net has no NS records.
NS records for this zone are defined at htctech.net.
NS records for this zone are defined at htctech.net.
Question and response
Question
dig mail.htctech.net. NS
Answer
The response has no answer records.
Authority
htctech.net. 900 SOA ns.htc.net. postmaster.ns.htc.net. 2024013002 1800 900 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0