Simply use
wget <url>
and see the output. For example if you use
wget students.iiit.ac.in/~sysadmin/
you will see output
--2009-06-02 10:00:24-- http://students.iiit.ac.in/~sysadmin
Resolving students.iiit.ac.in... 192.168.36.200
Connecting to students.iiit.ac.in|192.168.36.200|:80... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: http://web.iiit.ac.in/~sysadmin [following]
--2009-06-02 10:00:24-- http://web.iiit.ac.in/~sysadmin
Resolving web.iiit.ac.in... 192.168.36.158
Connecting to web.iiit.ac.in|192.168.36.158|:80... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: http://web.iiit.ac.in/~sysadmin/ [following]
--2009-06-02 10:00:24-- http://web.iiit.ac.in/~sysadmin/
Connecting to web.iiit.ac.in|192.168.36.158|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 3377 (3.3K) [text/html]
Saving to: `index.html'
As you can see the in Location: header the page redirects to web.iiit.ac.in/~sysadmin. After this also check contents of index.html. If they content HTTP META refresh tag like
<html>
<head>
<META HTTP-EQUIV="Refresh" CONTENT="0; URL=http://research.iiit.ac.in/~saurabh.barjatiya">
</head>
<body>
</body>
</html>
Then the web.iiit.ac.in/~sysadmin page will redirect to research.iiit.ac.in/~saurabh.barjatiya.
These are the two most common ways of redirecting used by people. The website you are interested in most probably uses one of the above two methods or combination of both.