DNS delegation of mailyahoo.net updated: May 25, 2013 3:55:56 PM
Delegation
step
query
auth
servers
1
mailyahoo.net.
.
(a,l,c,d,g,e,b,k,j,h,m,f,i).root-servers.net.
2
mailyahoo.net.
net.
(i,l,j,g,m,h,b,d,a,e,f,c,k).gtld-servers.net.
3
mailyahoo.net.
mailyahoo.net.
(ns4,ns2,ns1,ns3,ns5).yahoo.com.
We pick a.root-servers.net, one of the 13 root servers (1), and ask it about mailyahoo.net and learn that net is delegated to 13 name servers (2), so we ask i.gtld-servers.net where we learn that mailyahoo.net is delegated to five name servers, including ns4.yahoo.com (3), so we ask that one and get the following answer:
Mailyahoo.net is a domain controlled by five domain name servers at yahoo.com. All five of them are on different IP networks. Incoming mail for mailyahoo.net is handled by one mail server at .. We are missing the IP:s of one server: .. Mailyahoo.net has two IP numbers (68.180.206.184, 98.139.102.145). Both are on different IP networks.
The two IP numbers 68.180.206.184 and 98.139.102.145 together
Most of the several thousand of host names that point to the two IP numbers 68.180.206.184 and 98.139.102.145 together, hereafter referred to as "IP group 1", use the five name servers ns1, ns2, ns3, ns4 and ns5.yahoo.com together, hereafter referred to as "name server group 1", (example: yahoopopupbloker.com, yahoocowboy.com and yaahoo.de ). Worth noting is that half of the domains that use name server group 1 point to IP group 1.
The five name servers ns1, ns2, ns3, ns4 and ns5.yahoo.com together
Two thirds of the several thousand of domains that use name server group 1 point to IP group 1 (example: yahchoo.com, yahoomescenger.com and yaohoo.com ). Worth noting is that most of the host names that point to IP group 1 use name server group 1.
The name server ns1.yahoo.com
There are several thousand of domains that use the name server ns1.yahoo.com.
