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Windows 7: Pinging Question

31 Jan 2014   #1

Windows 7
Pinging Question

This is kind of a basic question, but I never noticed this until now. You can ping Google and get an address resolution of every time and you can ping (without the w's) and get every time. So how is it that the use or lack of w's produce different addresses?

My System SpecsSystem Spec
31 Jan 2014   #2

Windows 7 Pro 64 bit

As you are no doubt aware Google is a large organization and maintains servers in many countries. Even within a specific location there are likely to be several IP addresses that are used to spread the load. Which one you will get depends on a variety of conditions including which country you are in, the URL you specify, which DNS servers were involved, and how they are configured. This is common when dealing with large organizations. The details are complex and I will not attempt to describe them.

I pinged and, with and without the www, each had a different IP and all different from yours.

Note that many Internet hosts, including most Microsoft websites, do not support ping. There are security implications and this is just a part of keeping a very busy server up and running.

Edit: To understand all of this you first have to understand how the DNS system works and that is far too complex to describe in a forum post. DNS is what translates a name like into an IP address that is used on the Internet. The Internet could function without the names at all, the problem being that people more easily remember names than long numbers that could have as many as 12 digits.
My System SpecsSystem Spec

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