DNS delegation of ergo.com.br updated: May 23, 2013 12:45:43 PM
Delegation
step
query
auth
servers
1
ergo.com.br.
.
(h,d,j,e,c,b,a,g,k,l,m,f,i).root-servers.net.
2
ergo.com.br.
br.
(b,e,a,d,c,f).dns.br.
3
ergo.com.br.
ergo.com.br.
(dns2,dns3,dns4,dns1).ethru.com.br.
We pick h.root-servers.net, one of the 13 root servers (1), and ask it about ergo.com.br and learn that br is delegated to six name servers (2), so we ask b.dns.br where we learn that ergo.com.br is delegated to four name servers, including dns2.ethru.com.br (3), so we ask that one and get the following answer:
All of the three domains that use the primary name server dns1.ethru.com.br use name server group 1. Worth noting is that all of the domains that use name server group 1 use the primary name server dns1.ethru.com.br.
The four name servers dns1, dns2, dns3 and dns4.ethru.com.br together
All of the three domains that use name server group 1 use the primary name server dns1.ethru.com.br. Worth noting is that all of the domains that use the primary name server dns1.ethru.com.br use name server group 1.
The two mail servers mx-vip-01 and mx-vip-02.uni5.net together
There are more than a thousands domains that use the two mail servers mx-vip-01 and mx-vip-02.uni5.net together, hereafter referred to as "mail server group 1".