DNS delegation of f.cz updated: Jun 19, 2013 9:52:53 PM
Delegation
step
query
auth
servers
1
f.cz.
.
(e,g,c,i,h,l,f,k,b,a,m,d,j).root-servers.net.
2
f.cz.
cz.
(d,a,c,b,f).ns.nic.cz.
3
f.cz.
f.cz.
(ns3,ns2,ns).spoje.net.
We pick e.root-servers.net, one of the 13 root servers (1), and ask it about f.cz and learn that cz is delegated to five name servers (2), so we ask d.ns.nic.cz where we learn that f.cz is delegated to three name servers, including ns3.spoje.net (3), so we ask that one and get the following answer:
The two mail servers smtp and webspace.arachne.cz together
There are about fourty domains that use mail server group 1.
Three quarter of those use name server group 1 (example: telseznam.cz, lk-foto.com and epicfail.cz ). Worth noting is that every fifth of the domains that use name server group 1 use mail server group 1.
Two thirds of the about fifty host names that point only to the IP number 213.151.89.107 use name server group 1 (example: typosemestr.cz, vorisek.cz and merkner.net ). Worth noting is that one quarter of the domains that use name server group 1 point only to the IP number 213.151.89.107.
The two name servers ns and ns2.arachne.cz together
There are more than hundred domains that use name server group 1.
One quarter of them point only to the IP number 213.151.89.107. Worth noting is that half of the host names that point only to the IP number 213.151.89.107 use name server group 1.
Every fifth of them use mail server group 1. Worth noting is that two thirds of the domains that use mail server group 1 use name server group 1.
The two mail servers smtp.arachne.cz and mail.spoje.net together