We pick h.root-servers.net, one of the 13 root servers (1), and ask it about www.org and learn that org is delegated to six name servers (2), so we ask d0.org.afilias-nst.org where we learn that www.org is delegated to three name servers, including ns3.w3.org (3), so we ask that one and get the following answer:
Www.org is a domain controlled by three domain name servers at w3.org having a total of four IP numbers. All four of them are on different IP networks. Incoming mail for www.org is handled by three mail servers also at w3.org. Both are on the same IP network. We are missing the IP:s of one server: new-lisa.w3.org. Www.org has one IP number (128.30.52.45), but the reverse is dolph.w3.org.
Www.org is hosted on a server in Cambridge, MA, United States.
The IP number 128.30.52.45
There are eight host names that point to the IP number 128.30.52.45.
All of those point only to that ip number (example: w3.org ).
Four of them use the name server ns3.w3.org. Worth noting is that four of the domains that use the name server ns3.w3.org point to the IP number 128.30.52.45.
Four of them use the name server ns2.w3.org. Worth noting is that four of the domains that use the name server ns2.w3.org point to the IP number 128.30.52.45.
Four of the ten domains that use the mail server maggie.w3.org point to the IP number 128.30.52.45. Worth noting is that four of the host names that point to the IP number 128.30.52.45 use the mail server maggie.w3.org.