0 What is WWW3 or WWW2 or WWW1 ?

We all know about “www” stands for world wide web, which is a prefix used before any domain name such as www.googl.com or www.seoservices-seocompany.blogspot.in. But what is www1, www2, or www3.

You must have the knowledge of www1, www2 or www3. Www1, www2 or www3 is nothing but a mirror of the real web server which is typical www. Many websites such as government, banks and many huge search engines such as google, yahoo (www1.google.com or www2.yahoo.com)!!!!! uses www1 or www2. The main purpose of this techniques is reducing the load of server. Some times the original server need to be updated, modified or upgraded but such a circumstances huge websites like .edu, google.com, yahoo.com, .gov can not shut their main server down for an hour to update or upgrade their system. Therefore, they need to use www1 or www2 duplication of their mainframe server.

Sometimes this different servers used for the serving users based on their geographical location. Suppose, if someone type http://www.google.com form US, they might be taken to the original google server which means http://www.google.com but if someone type http://www.google.com from Africa, it might take them to www2.google.com or www1.google.com.

First Thing is that it is not sub domain. It is used to reduce load, but it is also used to increase security of a website. Before people used www2, www1, www3, www6 for secured Connections but nowadays https and http6 connections are used, these connections are better and they encrypt the data that is being transferred, we can't say that https and http6 encryptions cannot be cracked, but they are much secured than www secure connections. Nowadays google and yahoo also use https connection which is Verisign Class 3 protection but still they do not use wildcard security as there is https connection only on Login items in Google and Yahoo. Many sites like expat job group network have shifted to www5 from http6. https system is more secure than http6 systems. Google has also taken the security(https system) from Thawte, INC. But then also it is easy for hackers to break the encryption and take the information. The person who knows how to create ssl can easily get into the encrypted files. Means the people of Thawte can easily hack google's website.