DNS delegation of www.tv updated: Jun 19, 2013 1:01:06 PM
Delegation
step
query
auth
servers
1
www.tv.
.
(e,a,c,i,k,f,h,g,j,b,m,l,d).root-servers.net.
2
www.tv.
tv.
(c5,h5,d5,f5,g5,a5,l5).nstld.com.
3
www.tv.
www.tv.
(k4,g4,h4,a4,l4,f4,j4).nstld.com.
We pick e.root-servers.net, one of the 13 root servers (1), and ask it about www.tv and learn that tv is delegated to seven name servers (2), so we ask c5.nstld.com where we learn that www.tv is delegated to seven name servers, including k4.nstld.com (3), so we ask that one and get the following answer:
Www.tv is a domain controlled by seven domain name servers at nstld.com. There are four duplicated IP numbers. All three of them are on different IP networks. Incoming mail for www.tv is handled by four mail servers at psmtp.com. All four of them are on the same IP network. Www.tv has one IP number (72.13.32.43), but the reverse is dnsassurancesolutions.com.
The four name servers a4, f4, g4 and l4.nstld.com together
A third of the several thousand of domains that use name server group 2 point only to the IP number 72.13.32.43 (example: natixis-bermuda.com, unioncitypatch.com and bloggingcigars.com ). Worth noting is that three quarter of the host names that point only to the IP number 72.13.32.43 use name server group 2.
The IP number 72.13.32.43
There are several thousand of host names that point to the IP number 72.13.32.43.
Three quarter of the several thousand of host names that point only to the IP number 72.13.32.43 use name server group 2 (example: accountguard.us, patchmedia.net and univisioncompras.com ). Worth noting is that a third of the domains that use name server group 2 point only to the IP number 72.13.32.43.
The name server k4.nstld.com
Most of the several thousand of domains that use the name server k4.nstld.com use name server group 3 (example: 7x.tv, manulife.com and pyc.tv ).
The name server j4.nstld.com
Three quarter of the several thousand of domains that use the name server j4.nstld.com use name server group 3 (example: cbk.tv, kuk.tv and m-ssl.biz ).