Question and response
Question
dig ns2.thpttanphu.com. NS
Answer
ns2.thpttanphu.com. 5 CNAME thpttanphu.com.
thpttanphu.com. 5 NS ns1.thpttanphu.com.
thpttanphu.com. 5 NS ns2.thpttanphu.com.
Authority
The response has no authority records.
Additional
ns1.thpttanphu.com. 5 A 138.128.171.42
ns2.thpttanphu.com. 5 A 138.128.171.43
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0