DNS delegation of heatsci.com updated: Jun 19, 2013 3:27:17 AM
Delegation
step
query
auth
servers
1
heatsci.com.
.
(k,m,f,g,i,h,c,e,l,d,b,a,j).root-servers.net.
2
heatsci.com.
com.
(i,a,c,b,f,e,l,m,d,k,j,h,g).gtld-servers.net.
3
heatsci.com.
heatsci.com.
(secondary,primary).learningresources.com.
We pick k.root-servers.net, one of the 13 root servers (1), and ask it about heatsci.com and learn that com is delegated to 13 name servers (2), so we ask i.gtld-servers.net where we learn that heatsci.com is delegated to two name servers, including secondary.learningresources.com (3), so we ask that one and get the following answer:
Two of them point only to the IP number 63.234.93.75. Worth noting is that two of the host names that point only to the IP number 63.234.93.75 use name server group 1.
The two name servers primary.learningresources.com and ns2.norlight.net together
Two of the four host names that point only to the IP number 63.234.93.75 use name server group 1. Worth noting is that two of the domains that use name server group 1 point only to the IP number 63.234.93.75.