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Date: Tue, 29 Apr 2003 21:29:00 +0100
From: Jez Hancock <jez.hancock@munk.nu>
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Subject: Re: Netmasks: the truth is out there?
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On Tue, Apr 29, 2003 at 06:39:09PM +0100, Jonathan wrote:
> There's a nice port called whatmask (/usr/ports/net/whatmask) which will
> show you examples of how different netmasks are used.
Nice port, thanks for pointing that out.

I was looking for a network calculator the other day and found these:

http://www.telusplanet.net/public/sparkman/netcalc.htm
http://ccna.exampointers.com/subnet.htm

comes in handy for calculating start and end addresses for given
ip/netmask pairs.