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When I use the service, by running the following command:

$> curl

I returns a list of IP addresses. does anyone know what this IP addresses are. I am behind a proxy, so I assume it has something to do with that.

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up vote 0 down vote accepted

It looks like the service looks at the X-Forwarded-For field in the http request. This is (optionally) added by proxy servers in the path, referencing the IP address of the device they are requesting on behalf of.

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That makes perfect sense - thanks Paul. – simbro Jul 26 '13 at 10:46

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