DNS delegation of facebook.dk updated: May 19, 2013 4:13:49 AM
Delegation
step
query
auth
servers
1
facebook.dk.
.
(e,l,j,f,b,g,k,h,a,c,d,m,i).root-servers.net.
2
facebook.dk.
dk.
(b,a,l,c,s,p).nic.dk.
3
facebook.dk.
facebook.dk.
(a,b).ns.facebook.com.
We pick e.root-servers.net, one of the 13 root servers (1), and ask it about facebook.dk and learn that dk is delegated to six name servers (2), so we ask b.nic.dk where we learn that facebook.dk is delegated to two name servers, including a.ns.facebook.com (3), so we ask that one and get the following answer:
Facebook.dk is ranked #3537144 world wide and is hosted on two servers in Menlo Park, CA, United States even though the hostname implies Denmark. It has 571 inlinks.
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.ca, facebook.cl and facebook.co ). Worth noting is that eleven percent of the domains that use name server group 1 point to IP group 1.
