North American Network Operators Group
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Re: Mapping IP -> ASN

  • From: Bradley Dunn
  • Date: Fri Nov 15 12:45:34 1996 
On Fri, 15 Nov 1996, Lyndon Nerenberg wrote:

> Is there a tool available that will take an IP address and return the 
> ASN attached to that network? I've been in situations before where this 
> information would be useful, but not having access to the BGP routing 
> information I'm not sure how to do this? (I've looked around some 
> "likely" web sites - such as Merit - but haven't found anything.)

http://nitrous.digex.net/

is always useful. So is

telnet route-server.cerf.net

-BD

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