Mailing List SIMS@mail.stalker.com Message #14770
From: Christopher Bort <cbort@globalhomes.com>
Subject: Re: (OT) Interpreting CIDR network info
Date: Wed, 29 Sep 2004 11:11:36 -0700
To: SIMS Discussions <SIMS@mail.stalker.com>
X-Mailer: Mailsmith 2.1.4 (Blindsider)
On 09/29/04 at 10:19, Dave Pooser wrote:

> > For example, 218.175.0.0/16... how do I interpret that? I have read
> > some of the RFC's on CIDR notation, but it still boggles my mind.
> > Would that mean that they own the entire range from
> > 218.175.0.0-218.175.254.254?
>
> Yep.

Not quite. It's actually 218.175.0.0 - 218.175.255.255

> The /8, /16 and /24 netblocks are easy. The others actually
> require some thinking.

But not all that much, really, once you get the hang of it.

> > Is there an easy way to read CIDR? or a tool that will do the
> > conversion?
>
> I like <http://jodies.de/ipcalc>.

There's also whatmask from <http://www.laffeycomputer.com/software.html>.
(I like to do them in my head, but that's just me.  ;-] )
--
Christopher Bort
<cbort@globalhomes.com>
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