There is nothing in the HTTP specification that says a web site must start with www. or any other prefix. It is simply a convention that began in the early days of the web and was used to distinguish a company's web server from its FTP server, gopher server, mail server, et cetera. But no such distinction is necessary, because web servers respond on TCP port 80, which is distinct from port 25 (outgoing mail), port 110 (POP mail), port 21 (FTP control), etc.
Some web sites use www2., www3., www4., etc. as names for additional web servers that handle some of the traffic for the site. But it's strictly up to the webmaster and the person who handles DNS for the domain. These could just as easily be catnip.example.com, dirtnap.example.com or whatever else.
There is nothing in the HTTP specification that says a web site must start with www. or any other prefix. It is simply a convention that began in the early days of the web and was used to distinguish a company's web server from its FTP server, gopher server, mail server, et cetera. But no such distinction is necessary, because web servers respond on TCP port 80, which is distinct from port 25 (outgoing mail), port 110 (POP mail), port 21 (FTP control), etc.
Some web sites use www2., www3., www4., etc. as names for additional web servers that handle some of the traffic for the site. But it's strictly up to the webmaster and the person who handles DNS for the domain. These could just as easily be catnip.example.com, dirtnap.example.com or whatever else.
RICH THIS IS THE OTHER, YOU ARE NOT ALLOWED TO BE HELPFUL! AND MOST CERTAINLY NOT THIS HELPFUL.
Please forgive Rich, he is always trying to baffle people with techno babble. Some even believe he is correct. www2 is in fact a second secret layer of the internet. Clever people, the sort that can actually use a search engine, hang out there to avoid simpletons. Now you have stumbled upon us we shall all flee to www? and remain free from ignorance for a while longer.
***prepares to answer questions about search engines***
Not being fit for human consumption, they're better suited for use as fuel. It is rare to find one that a vet has found to be disease free. In the event of such an occurrence well done is a good choice, just to be on the safe side.
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