IP Prefixes are allocated ..

Mon Nov 28 14:55:10 UTC 2005

On 28-Nov-2005, at 01:15, Glen Kent wrote:

> to different Autonomous systems.

No, but...

> 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?
>
> I tried searching through all the WHOIS records for a domain name. I
> get the IP address but i dont get the AS number.

... if you want to know which AS is originating a prefix which covers  
a particular address right now, you can always use whois.cymru.com:

[halibut:~]$ whois -h whois.cymru.com 203.97.1.241
ASN     | IP               | Name
4768    | 203.97.1.241     | CLIX-NZ TelstraClear Ltd
[halibut:~]$

Joe