We pick i.root-servers.net, one of the 13 root servers (1), and ask it about yahoo.info and learn that info is delegated to six name servers (2), so we ask a0.info.afilias-nst.info where we learn that yahoo.info is delegated to five name servers, including ns1.yahoo.com (3), so we ask that one and get the following answer:
Yahoo.info is a domain controlled by five domain name servers at yahoo.com. All five of them are on different IP networks. Incoming mail for yahoo.info is handled by one mail server at .. We are missing the IP:s of one server: .. Yahoo.info has two IP numbers (68.180.206.184, 98.139.102.145). Both are on different IP networks.
The five name servers ns1, ns2, ns3, ns4 and ns5.yahoo.com together
Three quarter of the several thousand of domains that use name server group 1 point to IP group 1 (example: mashyahoo.se, delete-yahoo.com and yahowmusic.com ). Worth noting is that most of the host names that point to IP group 1 use name server group 1.
The IP number 98.139.102.145
There are several thousand of host names that point to the IP number 98.139.102.145.
