DNS delegation of flickr.net.nz updated: May 23, 2013 8:43:22 AM
Delegation
step
query
auth
servers
1
flickr.net.nz.
.
(e,f,m,i,l,a,k,d,c,j,h,g,b).root-servers.net.
2
flickr.net.nz.
nz.
(ns7,ns5,ns2,ns1,ns4,ns3,ns6).dns.net.nz.
3
flickr.net.nz.
flickr.net.nz.
(ns1,ns2).yahoo.com.
We pick e.root-servers.net, one of the 13 root servers (1), and ask it about flickr.net.nz and learn that nz is delegated to seven name servers (2), so we ask ns7.dns.net.nz where we learn that flickr.net.nz is delegated to two name servers, including ns1.yahoo.com (3), so we ask that one and get the following answer:
Flickr.net.nz is a domain controlled by five domain name servers at yahoo.com. All five of them are on different IP networks. Incoming mail for flickr.net.nz is handled by one mail server at .. We are missing the IP:s of one server: .. Flickr.net.nz has two IP numbers (68.180.206.184, 98.139.102.145). Both are on different IP networks.
The five name servers ns1, ns2, ns3, ns4 and ns5.yahoo.com together
Half of the several thousand of domains that use name server group 1 point to the two IP numbers 68.180.206.184 and 98.139.102.145 together, hereafter referred to as "IP group 1", (example: yahooonesearch.net, girlsofyahoo.com and yahooalohagroove.com ). Worth noting is that most of the host names that point to IP group 1 use name server group 1.
The mail server. Only
There are several thousand of domains that only use the mail server ..
