Michael C. Toren on 5 Apr 2006 15:28:17 -0000

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Re: [PLUG] OT: Verizon & spam blocking

On Wed, Apr 05, 2006 at 11:15:33AM -0400, Doug Crompton wrote:
> It shows 42% US. That is still a great deal coming from offshore.

There are other problems with this approach as well.  For one, how do
you determine the country or continent of origin?  You can try making
the assumption that if the address space was allocated by a regional
registrar other than ARIN that it's "foreign", but there are plenty
of legitimate non-ARIN allocated subnets in use within the US.

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