I have seen outputs of a program that does this on the NANOG list.

Maybe have a squiz through the archives and email the poster.

Symon

-----Original Message-----
From: Troy Leliard [mailto:[EMAIL PROTECTED] 
Sent: 07 March 2003 09:52
To: [EMAIL PROTECTED]
Subject: RE: Traceroute (kind of O/T) [7:64637]


You can always query ARIN or RIPE whois database.

Jim Devane wrote:
> 
> hi,
> 
> i am wondering if anyone knows how the route is able to provide the AS

> in a traceroute. I figure that it is querying it's own BGP table, 
> kinda doinga  mini-"sh ip bgp x.x.x.x" sort of deal.
> 
> the reason I am asking, I am trying to write a traceroute program and 
> would like to include AS info in it. My own traces from a linux or 
> windoes box don't include this info...
> 
> I considered getting zebra going and querying the server's BGP table
> but I am hoping there is a nifty UDP probe or ICMP message that
> will return that info.
> 
> any suggestions?
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