DNS delegation of mail.ziis.com updated: May 25, 2013 3:06:40 AM
Delegation
step
query
auth
servers
1
mail.ziis.com.
.
(m,f,k,j,g,e,d,i,c,b,h,a,l).root-servers.net.
2
mail.ziis.com.
com.
(a,m,b,k,d,e,i,j,g,l,f,h,c).gtld-servers.net.
3
mail.ziis.com.
ziis.com.
(ns2,ns1).mr0berts.arvixevps.com.
4
ziis.com.
ziis.com.
(ns2,ns1).mr0berts.arvixevps.com.
We pick m.root-servers.net, one of the 13 root servers (1), and ask it about mail.ziis.com and learn that com is delegated to 13 name servers (2), so we ask a.gtld-servers.net where we learn that ziis.com is delegated to two name servers, including ns2.mr0berts.arvixevps.com (3), so we ask that one where we see a CNAME from mail.ziis.com to ziis.com, so we have to start all over again. We already know that ns2.mr0berts.arvixevps.com is authoritative for ziis.com (4) and ask it about ziis.com and get the following answer: