[rescue] IP blocks

Daniel Johannsson djohanns at zeppelin.net
Wed Feb 20 19:11:58 CST 2002


On Wed, Feb 20, 2002 at 05:32:29PM -0600, Eric Dittman wrote:
> 
> BTW, I still haven't found an easy way to translate an AS
> number (AS3215 in this case) into a set of IP blocks.
> -- 
> Eric Dittman

How about just telnetting to one of the route servers, such
as route-server.ip.att.net and running the following:
show ip bgp regexp _3215$
This should give you all of the networks they announce, but
excludes any networks in other ASs that they give transit
to (I believe, I'm rusty in the routing dept).
Later,

Dan



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