RE: /24s run amuck again

[Philip Smith <pfs () cisco com>]

Hi Richard,

I was working on almost the same thing... :-) As from next Friday, my 
routing report will include the top 20 ASes which are announcing prefixes 
more specific than the registry minimum allocation (/20), more specific 
than a /24 from 192/8 space, more specific than a /16 from former B space, 
more specific than a /8 from former A space...

A taster follows:

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

  ASN   No of nets  Description
  701     1584      UUNET Technologies, Inc.
 1221     1580      Telstra
  705     1490      UUNET Technologies, Inc.
 2764      866      connect.com.au pty ltd
 3491      651      CAIS Internet
 7046      623      UUNET Technologies, Inc.
  690      502      Merit Network
 4293      481      Cable & Wireless USA
18994      468      Global Crossing
 7018      437      AT&T
15870      436      Global Center Frankfurt
    1      429      BBN Planet
  702      423      UUNET Technologies, Inc.
 1239      364      Sprint ICM-Inria
  209      350      Qwest
 5106      343      Ameritech Advanced Data Servi
 3561      332      Cable & Wireless USA
18993      325      Global Crossing
11371      307      Rhythms NetConnections
 4323      303      Time Warner Communications, I

There is no attempt to measure aggregation - that's the job of the CIDR 
Report. This simply looks at the prefix announced and if it is outside the 
above limits, it is counted. Makes very interesting reading...

philip
--

At 13:53 08/06/2001 -0400, Richard A. Steenbergen wrote:

> On Fri, Jun 08, 2001 at 09:31:03AM -0700, Karyn Ulriksen wrote:
> >
> > I had a full /19 sliced and diced up into /24 until yesterday when I
> > officially completed my data center migration.  None appear in the list
> > below.  How recent is this information?
>
> Woops, I was running this against an old routing table. My appologies.
>
> I've updated the list to reflect a routing table taken this morning from
> 1720 (CERF) and 3967 (Exodus) transit. I'm still debugging the parser, so
> it may not be 100% perfect, but the point remains the same.
>
> The url is the same:
> http://www.e-gerbil.net/ras/projects/ipaddr/24amuck.txt
>
> --
> Richard A Steenbergen <ras () e-gerbil net>       http://www.e-gerbil.net/ras
> PGP Key ID: 0x138EA177  (67 29 D7 BC E8 18 3E DA  B2 46 B3 D8 14 36 FE B6)