DNS delegation of ptbss.com updated: May 26, 2013 2:14:47 AM
Delegation
step
query
auth
servers
1
ptbss.com.
.
(m,j,h,i,d,a,b,e,g,l,f,c,k).root-servers.net.
2
ptbss.com.
com.
(b,g,a,j,d,h,m,i,e,k,c,f,l).gtld-servers.net.
3
ptbss.com.
ptbss.com.
(ns2,ns1).micfo.com.
We pick m.root-servers.net, one of the 13 root servers (1), and ask it about ptbss.com and learn that com is delegated to 13 name servers (2), so we ask b.gtld-servers.net where we learn that ptbss.com is delegated to two name servers, including ns2.micfo.com (3), so we ask that one and get the following answer:
There are several hundred of domains that only use the IPv4 number 199.189.248.31.
A third of those use name server group 1 (example: cadimino.com, wisenetworks.net and talkio.com ). Worth noting is that about one in six of the domains that use name server group 1 use only the IPv4 number 199.189.248.31.