DNS delegation of y7mail.com updated: May 22, 2013 11:48:26 PM
We pick a.root-servers.net, one of the 13 root servers (1), and ask it about y7mail.com and learn that com is delegated to 13 name servers (2), so we ask g.gtld-servers.net where we learn that y7mail.com is delegated to five name servers, including ns3.yahoo.com (3), so we ask that one and get the following answer:
Y7mail.com is a domain controlled by five domain name servers at yahoo.com. All five of them are on different IP networks. Incoming mail for y7mail.com 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. Y7mail.com has two IP numbers (22.214.171.124, 126.96.36.199). Both are on different IP networks.