DNS delegation of dns.cz updated: May 23, 2013 6:51:25 AM
Delegation
step
query
auth
servers
1
dns.cz.
.
(j,l,g,e,k,m,f,a,d,c,h,b,i).root-servers.net.
2
dns.cz.
cz.
(b,a,f,c,d).ns.nic.cz.
3
dns.cz.
dns.cz.
(nss,ns).engine.cz.
We pick j.root-servers.net, one of the 13 root servers (1), and ask it about dns.cz and learn that cz is delegated to five name servers (2), so we ask b.ns.nic.cz where we learn that dns.cz is delegated to two name servers, including nss.engine.cz (3), so we ask that one and get the following answer:
Dns.cz is a domain controlled by four domain name servers at engine.cz. Some of them are on the same IP network. Incoming mail for dns.cz is handled by two mail servers also at engine.cz. Both are on the same IP network. Dns.cz has one IP number (217.31.62.9), but the reverse is www9.cloud.ignum.cz.
Most of the about fourty host names that point to the IP number 217.31.62.9 point only to that ip number (example: anect.com, amadeo.cz and anect.cz ).
Three quarter of the about sixty domains that use the name server nss.engine.cz use the two name servers ns and nss.engine.cz together, hereafter referred to as "name server group 1", (example: play.sk, aaa.cz and irobot.sk ).