DNS delegation of w21.vnexpress.net updated: May 23, 2013 5:02:25 AM
Delegation
step
query
auth
servers
1
w21.vnexpress.net.
.
(d,m,b,c,g,k,h,i,a,j,e,l,f).root-servers.net.
2
w21.vnexpress.net.
net.
(g,f,k,h,b,e,c,j,d,i,m,l,a).gtld-servers.net.
3
w21.vnexpress.net.
vnexpress.net.
(ns1,ns2).gate.vn.
We pick d.root-servers.net, one of the 13 root servers (1), and ask it about w21.vnexpress.net and learn that net is delegated to 13 name servers (2), so we ask g.gtld-servers.net where we learn that vnexpress.net is delegated to two name servers, including ns1.gate.vn (3), so we ask that one and get the following answer:
