ASNumber Extension for Firefox available

Gadi Evron ge at
Tue Feb 14 01:33:16 UTC 2006

Andre Oppermann wrote:
> We've written a Firefox Extension that displays the AS Number of every
> website visited along with some additional interesting information. All
> data is updated daily and the prefix to AS number mapping is from a DFZ
> BGP feed.
> You can download the extension here (a screenshot is available too):
> If you have any feedback, comments or feature requests please contact
> me either directly or at <asnumber at>. We are working on 
> providing
> a lot more information on the RIR IP address delegations but need fully
> access to all RIR's whois records for that. I've completed all paperwork
> last week and we should receive full access in the near future.
> Another thing I want to do is to show the number of RBL (Spamhaus, etc)
> listed IPs per AS. Contacting those RBLs is rather difficult and any help
> to discuss this directly with the RBL administrators is appreciated.
> Another request: So far we've got data servers in Europe and USA but
> none in Asia-Pacific. If you are able to host either a dedicated or
> shared (vmware/xen) FreeBSD server in Japan or South Korea with excellent
> inter-Asia connectivity please contact me directly.
> BGP Experts, Traffic & Network Engineering Gurus

Thank you guys for creating this.


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