Mailing List SIMS@mail.stalker.com Message #14773
From: Joe Laffey <joe@laffeycomputer.com>
Subject: Re: (OT) Interpreting CIDR network info
Date: Wed, 29 Sep 2004 14:29:40 -0500 (CDT)
To: SIMS Discussions <SIMS@mail.stalker.com>
On Wed, 29 Sep 2004, Joe Laffey wrote:

> On Wed, 29 Sep 2004, NetHead wrote:
>
> > I realize this is a bit off-topic, but it is relevant in that sometimes
> > when trying to set up a blacklist for a range of IP's, my WHOIS reveals
> > only a CIDR designation for the network I am suspicious of.
> >
> > 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?
> >
> > Is there an easy way to read CIDR? or a tool that will do the conversion?
> >
> > Thanks for any and all help.
>
> Use the free program Whatmask. (I wrote it.)
>
> http://www.laffeycomputer.com/whatmask.html
>
> There is source doe and binaries for a few platforms, including Macs.

Oops. "soucre doe" is some secret code for "source code".


--
Joe Laffey                |        Visual Effects for Film and Video
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