DNS delegation of mail.ch updated: May 19, 2013 7:14:46 AM
Delegation
step
query
auth
servers
1
mail.ch.
.
(g,a,e,l,k,d,f,b,c,h,j,i,m).root-servers.net.
2
mail.ch.
ch.
(b,d,c,f,e,h,a).nic.ch.
3
mail.ch.
mail.ch.
(ns2,ns1).gna.ch.
We pick g.root-servers.net, one of the 13 root servers (1), and ask it about mail.ch and learn that ch is delegated to seven name servers (2), so we ask b.nic.ch where we learn that mail.ch is delegated to two name servers, including ns2.gna.ch (3), so we ask that one and get the following answer:
Mail.ch is a domain controlled by two domain name servers at gna.ch having a total of four IP numbers. Some of them are on the same IP network. Incoming mail for mail.ch is handled by one mail server at mail.ch themselves. Mail.ch has one IP number (195.226.6.10), but the reverse is ?.