Summary
ns4.yahoo.com has one IP number , which also has a corresponding reverse pointer.
dns.yahoo.com point to the same IP.
av.com,
who.com,
yimg.com,
yahoo.bg,
yahoo.hu and at least 100 other hosts use this as a nameserver.
search.ns4.yahoo.com are subdomains to this hostname.
yahoo.com is a domain controlled by five nameservers at
yahoo.com themselves. All of them are on different IP networks. Incoming mail for
yahoo.com is handled by six mailservers having a total of ten IP numbers. Some of them are on the same IP network.
yahoo.com has three IP numbers. All of them are on different IP networks.
ns4.yahoo.com is hosted on a server in United States.