From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Sascha Reissner" <sascha.reissner@toxicnet.de>
Subject: Re: Unassigned Networks List
Date: Sat, 8 Mar 2003 07:39:18 +0100
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To: "George J. Jahchan, Eng." <NetFilter-Users@Compucenter.org>, Netfilter <netfilter@lists.netfilter.org>
Cc: "Gokarn, Pavan" <PavanG@TechKnowledge.ws>

From: "George J. Jahchan, Eng." <NetFilter-Users@Compucenter.org>

[...]

> As mentioned before, classes A & D networks are fairly well documented on
> IANA's site <http://www.iana.org/assignments/ipv4-address-space>, but B
and
> C are listed as "various registries" and in bulk, which is of no help.
> I need a list of 128~191 and 192~223 netblocks which are either reserved
or
> not assigned.

[...]

so you plan on checking currently unassigned ip blocks on a daily base just
in case some ISP suddenly gets such a block assigned?

well, there are for sure some efford/reward relations that are not worth
doing.. this is one of them ;)

if you want security, unplug the network cable ;-)