pavetnam.com.vn has no NS records.
NS records for this zone are defined at com.vn.
NS records for this zone are defined at com.vn.
Question and response
Question
dig pavetnam.com.vn. NS
Answer
The response has no answer records.
Authority
com.vn. 5400 SOA dns-master.vnnic.vn. postmaster.vnnic.vn. 2022621692 3600 1800 604800 5400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0