DNS delegation of yahoo.jobs updated: May 25, 2013 7:49:06 PM
Delegation
step
query
auth
servers
1
yahoo.jobs.
.
(a,l,j,k,f,e,h,c,m,b,g,i,d).root-servers.net.
2
yahoo.jobs.
jobs.
(h5,l5,g5,f5,d5,a5,c5).nstld.com.
3
yahoo.jobs.
yahoo.jobs.
(ns2,ns1).yahoo.com.
We pick a.root-servers.net, one of the 13 root servers (1), and ask it about yahoo.jobs and learn that jobs is delegated to seven name servers (2), so we ask h5.nstld.com where we learn that yahoo.jobs is delegated to two name servers, including ns2.yahoo.com (3), so we ask that one and get the following answer:
Yahoo.jobs is a domain controlled by four domain name servers at yahoo.com. All four of them are on different IP networks. Incoming mail for yahoo.jobs is handled by one mail server at .. We are missing the IP:s of one server: .. Yahoo.jobs has two IP numbers (68.180.206.184, 98.139.102.145). Both are on different IP networks.