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Posted by Jerry Stuckle on 09/10/07 11:52
esoterik wrote:
> On Sun, 09 Sep 2007 17:19:23 -0400, Jerry Stuckle wrote:
>
>> esoterik wrote:
>>> On Sat, 08 Sep 2007 14:32:18 +0000, Rob wrote:
>>>
>>>> Just wondering how sites capture a visitor's IP address and how this is
>>>> done in PHP?
>>>
>>> any ideas how the ip address is resolved to a zipcode/location without
>>> using one of the commercial lists?
>>>
>> Nope, and even then it is not accurate. For instance, all AOL users
>> show as coming from Virginia. And when I'm on my dialup account from
>> MD, it shows I'm coming from NY.
>>
>> You can get a state (or, as in the case of the Washington, DC area, a
>> metro area) in maybe 70-90% of the cases. But the more accurate you try
>> to narrow it down, the less accurate your location will be.
>>
>>
> how exactly would you narrow it down to even the metro area of where the
> IP is registered to? I know visual traceroutes exist, but I'm not sure how
> I could write a script to resolve IP to an 'area' short of using cURL to
> strip it off someone elses website.
>
Tracing the route does nothing. You need an ip address to location
reference. The most accurate (still not very accurate) are available
for a charge; the free ones I've found are not very accurate.
Why do you need this, anyway?
--
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Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
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