DNS delegation of ig.com.au updated: May 25, 2013 6:11:02 AM
Delegation
step
query
auth
servers
1
ig.com.au.
.
(g,b,f,c,k,m,j,i,h,e,a,l,d).root-servers.net.
2
ig.com.au.
au.
(l,v,s,n,o,r,b,u,p,a,m).au.
3
ig.com.au.
ig.com.au.
(ns1,ns0).telstra.net.
We pick g.root-servers.net, one of the 13 root servers (1), and ask it about ig.com.au and learn that au is delegated to eleven name servers (2), so we ask l.au where we learn that ig.com.au is delegated to two name servers, including ns1.telstra.net (3), so we ask that one and get the following answer:
Ig.com.au is a domain controlled by two domain name servers at telstra.net. Both are on the same IP network. Incoming mail for ig.com.au is handled by three mail servers at ig.com.au and telstra.net having a total of four IP numbers. Two of them are on the same IP network. Ig.com.au has one IP number (203.45.206.223), but the reverse is mail2.ig.com.au.