Re: AS Connectivity Lookup

[Joe Provo <nanog-post () rsuc gweep net>]

On Wed, Mar 07, 2012 at 09:29:29AM -0800, Radke, Justin wrote:
> How can I easily view the current peering relationship of a particular AS?
> Assume the AS you are researching does not have a looking glass and you are
> not going to do lookups from the top 10 providers route servers to get some
> glimpse of their connectivity. In my particular search
> bgplay.routeviews.org does
> not have any information and as-rank.caida.org is out of date. In the past
> there was a great website called webtrace.info but it is no longer online.
>
> Any suggestions?

Any site you reference outside/not downstream of the desired 
AS will only provide you a partial picture.  Use many to try 
and create a holistic view.  So far it seems RIPE RIS hasn't
yet been mentioned:
http://www.ripe.net/data-tools/stats/ris/routing-information-service


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