On Wed, Feb 13, 2002, Ariel Biener wrote about "Re: Internet connection in Virtual PC":
> On Wed, 13 Feb 2002, Shachar Shemesh wrote:
>
> > 192.168.0.x ;), but nobody seems to know 172.16-31.x.x. Use that - show
> > them you are smart...
>
>
> <RANT>
> Despite RFC1918, with todays depleting IPv4 space, a wasted /12 (1048576
> IPs mind you) for private IP space is really stupid, and RFC1918 should be
This /12 is a drop in the ocean, considering all the wasted /8's, some of
which you mentioned too.
> If you have some spare time, try whois [EMAIL PROTECTED] up to
> [EMAIL PROTECTED] Then try calculating how much of that huge IP
> space is wasted.
Here's a list I generated a year ago (so it might not be 100% updated)
of entities owning and routing complete class A's.
Note that this this list comes from a real router, not whois lists. So
blocks that are formally allocated but are not routed do not get listed
here. These are not the problem - the problem is entities like Apple and
Mit, which probably have only 50,000 computers, and take up 16,777,216
addresses. The worst offender, by the way, is the US military, which seems
to take up almost 1/50 of all IP space. I'm sure the US military don't
have so many *globally accessible* machines...
CIDR AS (description of AS)
3.0.0.0/8 80 (used to be General Electric - doesn't seem to be active)
4.0.0.0/8 1 (GTE, formerly known as BBN)
6.0.0.0/8 1455 (US Military?)
12.0.0.0/8 7018 (AT&T WorldNet - but parts of this block are delegated to
clients with different ASs)
13.0.0.0/8 5673 (Xerox PARC)
15.0.0.0/8 71 (HP)
16.0.0.0/8 33 (Digital Equipment Corporation)
17.0.0.0/8 714 (Apple)
18.0.0.0/8 3 (MIT)
20.0.0.0/8 3360 ("Computer Sciences Corporation", csc.com, whatever that is)
25.0.0.0/8 5378 ("INSnet Europe", whatever that is - ARIN has this as
"Royal Signals and Radar Establishment", UK)
32.0.0.0/8 2686 (Another AT&T block, formerly IBM (or vice versa))
33.0.0.0/8 721 (DLA Systems Automation Center, also US military)
35.0.0.0/8 237 (Merit.Edu, Michigan Network)
38.0.0.0/8 174 (PSI)
40.0.0.0/8 3669 (IQuest, whatever that is)
44.0.0.0/8 7377 (Universiy of California, San Diego)
53.0.0.0/8 6878 (Debis, Germany, whatever that is)
55.0.0.0/8 568 (US Military)
57.0.0.0/8 2647 (Societe Internationale de Telecommunications Aeronautiques)
214.0.0.0/8 568 (US Military)
--
Nadav Har'El | Wednesday, Feb 13 2002, 1 Adar 5762
[EMAIL PROTECTED] |-----------------------------------------
Phone: +972-53-245868, ICQ 13349191 |The two rules for success are: 1. Never
http://nadav.harel.org.il |tell them everything you know.
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