One web server, multiple domains

From: sb5309@xxxxxxxxx
Date: Tue, 28 Oct 2008 00:23:12 -0700 (PDT)

A web server typically hosts multiple domains, eg "abcd.com",
"123456.com" etc.

When I ping "abcd.com" or "123456.com", it returns a single IP
address.

What mechanism is used to identify which domain to serve ?

Thanks.
.

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- Re: One web server, multiple domains; a slight twist
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