DNS delegation of igoogle.tel updated: May 22, 2013 9:59:29 PM
Delegation
step
query
auth
servers
1
igoogle.tel.
.
(d,j,i,c,b,l,k,a,g,f,h,e,m).root-servers.net.
2
igoogle.tel.
tel.
(b,g,e,h,c,f,d,a).dns.nic.tel.
3
igoogle.tel.
igoogle.tel.
(n0,s0,a0,t0,d0).cth.dns.nic.tel.
We pick d.root-servers.net, one of the 13 root servers (1), and ask it about igoogle.tel and learn that tel is delegated to eight name servers (2), so we ask b.dns.nic.tel where we learn that igoogle.tel is delegated to five name servers, including n0.cth.dns.nic.tel (3), so we ask that one and get the following answer:
Igoogle.tel is a domain controlled by five domain name servers at nic.tel having a total of seven IP numbers. Some of them are on the same IP network. Igoogle.tel has one IP number (194.77.54.2).
All of the several thousand of domains that use the primary name server d0.cth.dns.nic.tel use name server group 1 (example: trm.tel, gladiator.tel and hdh.tel ). Worth noting is that two thirds of the domains that use name server group 1 use the primary name server d0.cth.dns.nic.tel.
The five name servers a0, d0, n0, s0 and t0.cth.dns.nic.tel together
There are several thousand of domains that use name server group 1.