We pick m.root-servers.net, one of the 13 root servers (1), and ask it about flickr.org and learn that org is delegated to six name servers (2), so we ask b2.org.afilias-nst.org where we learn that flickr.org is delegated to five name servers, including ns2.yahoo.com (3), so we ask that one and get the following answer:
Flickr.org is hosted on four servers in Sunnyvale, CA, United States.
The two IP numbers 68.180.206.184 and 98.139.102.145 together
There are several thousand of host names that point to the two IP numbers 68.180.206.184 and 98.139.102.145 together, hereafter referred to as "IP group 1".
Most of those use the five name servers ns1, ns2, ns3, ns4 and ns5.yahoo.com together, hereafter referred to as "name server group 1", (example: abs-cbnyahoo.com, wwwyah00.net and foxytune.com ). Worth noting is that two thirds of the domains that use name server group 1 point to IP group 1.
The five name servers ns1, ns2, ns3, ns4 and ns5.yahoo.com together
Two thirds of the several thousand of domains that use name server group 1 point to IP group 1 (example: businesssuccessyahoogroups.com, coverture.com and yahoorussia.com ). Worth noting is that most of the host names that point to IP group 1 use name server group 1.