DNS delegation of datafolha.com.br updated: May 23, 2013 7:47:03 AM
Delegation
step
query
auth
servers
1
datafolha.com.br.
.
(j,d,i,m,k,e,l,a,c,f,b,h,g).root-servers.net.
2
datafolha.com.br.
br.
(c,f,b,e,a,d).dns.br.
3
datafolha.com.br.
datafolha.com.br.
(borges,eliot).uol.com.br.
We pick j.root-servers.net, one of the 13 root servers (1), and ask it about datafolha.com.br and learn that br is delegated to six name servers (2), so we ask c.dns.br where we learn that datafolha.com.br is delegated to two name servers, including borges.uol.com.br (3), so we ask that one and get the following answer:
Five of them use the primary mail server mx3.grupofolha.com.br and the last resort mail server.
The primary name server andromeda.folhasp.com.br only
Six of the seven domains that use the primary name server andromeda.folhasp.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 andromeda.folhasp.com.br.
Five of them use the two name servers andromeda and lupus.folhasp.com.br together (but neither borges nor eliot.uol.com.br ), hereafter referred to as "name server group 2". Worth noting is that five of the domains that use name server group 2 use only the IPv4 number 200.147.118.40.
The three name servers borges, charles and eliot.uol.com.br together
There are more than hundred domains that use the three name servers borges, charles and eliot.uol.com.br together, hereafter referred to as "name server group 4".