AS Connectivity Lookup

Henry Linneweh hrlinneweh at
Thu Mar 8 13:45:28 CST 2012

I really miss completewhois, have not found a really good replacement


 From: Joe Provo <nanog-post at>
To: "Radke, Justin" <jradke at> 
Cc: nanog at 
Sent: Wednesday, March 7, 2012 11:11 AM
Subject: Re: AS Connectivity Lookup
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
> does
> not have any information and is out of date. In the past
> there was a great website called 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:

         RSUC / GweepNet / Spunk / FnB / Usenix / SAGE / NewNOG

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