DNS delegation of webmail.alere.com updated: May 25, 2013 8:16:04 AM
Delegation
step
query
auth
servers
1
webmail.alere.com.
.
(h,m,f,k,e,i,c,a,d,b,j,g,l).root-servers.net.
2
webmail.alere.com.
com.
(h,j,a,f,d,g,e,c,k,i,l,m,b).gtld-servers.net.
3
webmail.alere.com.
alere.com.
(pdns1,pdns2).cscdns.net.
We pick h.root-servers.net, one of the 13 root servers (1), and ask it about webmail.alere.com and learn that com is delegated to 13 name servers (2), so we ask h.gtld-servers.net where we learn that alere.com is delegated to two name servers, including pdns1.cscdns.net (3), so we ask that one and get the following answer: