The Cidr Report

Sat Nov 13 01:10:21 UTC 2004

>>> ASnum    NetsNow NetsAggr  NetGain   % Gain   Description
>>>
>>> AS18566      751        6      745    99.2%   CVAD Covad Communications
>>> AS4134       825      178      647    78.4%   CHINANET-BACKBONE
>>>                                                No.31,Jin-rong Street
>>> AS4323       794      223      571    71.9%   TWTC Time Warner Telecom
>>> AS6197       814      430      384    47.2%   BNS-14 BellSouth Network
>>>                                                Solutions, Inc
>>> AS22773      401       17      384    95.8%   CXA Cox Communications Inc.
>>> AS27364      413       45      368    89.1%   ARMC Armstrong Cable Services
>>> AS701       1230      884      346    28.1%   UU UUNET Technologies, Inc.
>>> AS22909      412       81      331    80.3%   CMCS Comcast Cable
>>>                                                Communications, Inc.
>> e.g. is AS18566 the origin AS for 751 prefixes that could be
>> collapsed to 6?
> 
> not to justify the expense, but perhaps covad is renumbering from one
> block to another? Looking at their advertisments I see lots of /23 or /24
> blocks inside their larger covering routes... So either they deaggregated
> to renumber more gracefully, or they forgot their prefix-list outbound to
> williams and exodus ?
> 
> perhaps covad can explain? or silently cover up the 'mistake' (which is
> acceptable as well...)

it's not just covad.  they're just such an egregious case among
many socially and technically irresponsible polluters.

randy