[dante9999]

Aside from detecting your ip location they must be running some other proxy detecting schemes.

I live in Europe and have squid proxy server running on my Amazon instance located in Portland, Oregon (something like my private "free proxy"). It works ok in Firefox, but fails in Chrome, can't really figure out why. I suspect chrome extension I use to easily manage proxies adds some custom header that is detected by Netflix. And it's NOT some obvious header like "via" or "x-forwarded-for" which I disabled as a matter of course in squid conf. All "locate my ip" sites tell me I'm from US, but netflix tells me I'm from x (which is my homecountry).

Alternative to running http proxy such as squid is using ssh socks proxy(provided server you ssh to is located in US). This cannot be detected by any means IMO.