[c-nsp] Which IP's belong to AS1234?

Florian Weimer fweimer at bfk.de
Fri Sep 25 03:13:49 EDT 2009

* Andy Saykao:

> This might be a silly question but is there a tool somewhere that will
> give me a list of IP's that are owned by a particular AS.
> As an example, I might want to know which IP blocks belong to AS1234?

Run this:

  show ip bgp regexp _1234$

on a router in the DFZ.  (I get a single prefix,,
right now.)

Florian Weimer                <fweimer at bfk.de>
BFK edv-consulting GmbH       http://www.bfk.de/
Kriegsstraße 100              tel: +49-721-96201-1
D-76133 Karlsruhe             fax: +49-721-96201-99

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