DNS delegation of yahoo.ru updated: May 22, 2013 10:41:41 PM
Delegation
step
query
auth
servers
1
yahoo.ru.
.
(h,e,d,m,l,i,f,k,j,c,b,g,a).root-servers.net.
2
yahoo.ru.
ru.
(d,e,b,f,a).dns.ripn.net.
3
yahoo.ru.
yahoo.ru.
(ns2,ns5,ns7,ns1,ns3).yahoo.com.
We pick h.root-servers.net, one of the 13 root servers (1), and ask it about yahoo.ru and learn that ru is delegated to five name servers (2), so we ask d.dns.ripn.net where we learn that yahoo.ru is delegated to five name servers, including ns2.yahoo.com (3), so we ask that one and get the following answer:
Yahoo.ru 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.ru is handled by one mail server at .. We are missing the IP:s of one server: .. Yahoo.ru has two IP numbers (68.180.206.184, 98.139.102.145). Both are on different IP networks.
Yahoo.ru is ranked #2235211 world wide and is hosted on two servers in Sunnyvale, CA, United States even though the hostname implies Russian Federation. It has gained 143 inlinks over a period of nine 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".
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: classifiedsyahoo.com, yahoowallets.com and yahoogurup.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.
