In article you write:
How come I saw some web site has some number after www, how can they do > that?
> i.e.formatting link,formatting link
It's just a name, which can be anything the site owner wants. The www prefix is a convention but there's no technical requirement that a site have www in its name.
When you see sites named wwwNN, that invariably means that they have a bunch of web servers sharing the load, and when you first visit the site as
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, it redirects you to one of the numbered servers picked either at random, or picking one with a relatively low load.R's,
John