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Re: IP Prefixes are allocated ..

  • From: Joe Abley
  • Date: Mon Nov 28 09:56:28 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




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