DNS delegation of terra.dk updated: May 23, 2013 7:27:35 PM
Delegation
step
query
auth
servers
1
terra.dk.
.
(k,h,f,i,a,c,d,m,l,e,g,b,j).root-servers.net.
2
terra.dk.
dk.
(l,s,c,p,a,b).nic.dk.
3
terra.dk.
terra.dk.
(ns,ns2,ns3).dht.dk.
We pick k.root-servers.net, one of the 13 root servers (1), and ask it about terra.dk and learn that dk is delegated to six name servers (2), so we ask l.nic.dk where we learn that terra.dk is delegated to three name servers, including ns.dht.dk (3), so we ask that one and get the following answer:
Terra.dk is a domain controlled by two domain name servers at dht.dk. Both are on the same IP network. Incoming mail for terra.dk is handled by two mail servers also at dht.dk. Two mail servers have the same IP number. Terra.dk has one IP number (194.239.148.55), but the reverse is ?.
Half of the several hundred of domains that use the name server ns2.dht.dk use the two name servers ns and ns2.dht.dk together, hereafter referred to as "name server group 1", (example: vilsboll.dk, rtyman.dk and jahns.dk ).