DNS delegation of c.psi.net updated: May 19, 2013 8:00:40 AM
Delegation
step
query
auth
servers
1
c.psi.net.
.
(h,i,j,a,b,l,c,m,g,e,k,f,d).root-servers.net.
2
c.psi.net.
net.
(a,l,j,e,c,i,k,d,m,g,h,f,b).gtld-servers.net.
3
c.psi.net.
psi.net.
(auth2,auth1).dns.cogentco.com.
4
c.root-servers.net.
net.
(j,i,f,e,m,l,h,c,d,g,k,b,a).gtld-servers.net.
5
c.root-servers.net.
root-servers.net.
(m,f,l,h,e,k,j,d,c,a,g,b,i).root-servers.net.
We pick h.root-servers.net, one of the 13 root servers (1), and ask it about c.psi.net and learn that net is delegated to 13 name servers (2), so we ask a.gtld-servers.net where we learn that psi.net is delegated to two name servers, including auth2.dns.cogentco.com (3), so we ask that one where we see a CNAME from c.psi.net to c.root-servers.net, so we have to start all over again. We already know that j.gtld-servers.net is authoritative for net (4) and ask it about c.root-servers.net and learn that root-servers.net is delegated to 13 name servers (5), so we ask m.root-servers.net and get the following answer: