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From: Julian Elischer <julian@elischer.org>
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To: Aryeh Friedman <aryeh.friedman@gmail.com>
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Cc: freebsd-hackers@freebsd.org
Subject: Re: figuring out my subnet
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Aryeh Friedman wrote:
> My boss ordered a new subnet from our ISP and wrote down the subnet
> incorrectly is there anyway to deduce what it is?
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allocate a bigger one
then from each address ping you isp's mail server
when it stops responding you've reached the end of what he's routing 
to you :-)