Re: IP Prefixes are allocated ..

[Jon Lewis <jlewis () lewis org>]

On Mon, 28 Nov 2005, Glen Kent wrote:

> to different Autonomous systems.
>
> Is there a central/distributed database somewhere that can tell me
> that this particular IP prefix (say x.y.z.w) has been given to foo AS
> number?

Prefixes aren't assigned to ASNs.  They're assigned to 
organizations/networks.  Those entities may have several ASNs or no ASN of 
their own.  You can see what ASN(s) annnounce what prefixes by looking at 
BGP.

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 Jon Lewis                   |  I route
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