DNS delegation of facebookembed.com updated: May 20, 2013 1:57:54 AM
Delegation
step
query
auth
servers
1
facebookembed.com.
.
(c,l,k,e,b,j,g,d,a,h,m,i,f).root-servers.net.
2
facebookembed.com.
com.
(j,h,c,i,a,m,k,b,e,l,f,g,d).gtld-servers.net.
3
facebookembed.com.
facebookembed.com.
(b,a).ns.facebook.com.
We pick c.root-servers.net, one of the 13 root servers (1), and ask it about facebookembed.com and learn that com is delegated to 13 name servers (2), so we ask j.gtld-servers.net where we learn that facebookembed.com is delegated to two name servers, including b.ns.facebook.com (3), so we ask that one and get the following answer:
The two IP numbers 2a03:2880:2110:df01:face:b00c::8 and 173.252.110.27 together
Most of the about eighty host names that point to IP group 1 use the two name servers a and b.ns.facebook.com together, hereafter referred to as "name server group 1", (example: facebook.cl, facebook.co and faacebook.com ). Worth noting is that a third of the domains that use name server group 1 point to IP group 1.
