DNS delegation of cepl.lu updated: Jun 18, 2013 9:44:49 PM
Delegation
step
query
auth
servers
1
cepl.lu.
.
(k,e,h,i,d,c,m,g,f,a,b,j,l).root-servers.net.
2
cepl.lu.
lu.
(j,i,k,p,g,ns5,ns1).dns.lu.
3
cepl.lu.
cepl.lu.
(ns2,ns3,ns1).pt.lu.
We pick k.root-servers.net, one of the 13 root servers (1), and ask it about cepl.lu and learn that lu is delegated to seven name servers (2), so we ask j.dns.lu where we learn that cepl.lu is delegated to three name servers, including ns2.pt.lu (3), so we ask that one and get the following answer:
Cepl.lu is a domain controlled by three domain name servers at pt.lu having a total of six IP numbers. Two of them are on the same IP network. Incoming mail for cepl.lu is handled by one mail server at csl.lu.
There are almost a thousands domains that use the name server ns3.pt.lu.
All of those use the three name servers ns1, ns2 and ns3.pt.lu together, hereafter referred to as "name server group 1", (example: hlk.lu, kajak.lu and inf.lu ).