We pick d.root-servers.net, one of the 13 root servers (1), and ask it about yahoo.ca and learn that ca is delegated to nine name servers (2), so we ask j.ca-servers.ca where we learn that yahoo.ca is delegated to five name servers, including ns5.yahoo.com (3), so we ask that one and get the following answer:
Yahoo.ca is a domain controlled by four domain name servers at yahoo.com. All four of them are on different IP networks. Incoming mail for yahoo.ca is handled by three mail servers at yahoodns.net having a total of 16 IP numbers. There are 32 duplicated IP numbers. Some of them are on the same IP network. Yahoo.ca has two IP numbers (68.180.206.184, 98.139.102.145). Both are on different IP networks.
Yahoo.ca is ranked #4 world wide as yahoo.com and is hosted on two servers in Sunnyvale, CA, United States even though the hostname implies Canada. It has gained 518 inlinks over a period of 18 years.
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: gzyahoo.com, goupsyahoo.com and yahahoo.com ). Worth noting is that half 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: yahooboy4.com, iryahoo.com and yonlineprotection.com ). Worth noting is that most of the host names that point to IP group 1 use name server group 1.
The name server ns1.yahoo.com
There are several thousand of domains that use the name server ns1.yahoo.com.
