Apparemment, ce n'est pas le cas du proxy que j'ai utilisé. Voici ce que donne proxy-test
Apparemment, le seul élément qui rappelle la France est le champ Accept Language, peut être ebay se base là dessus.
Remote IP Address 65.49.14.21
Request Protocol HTTP/1.0 Method GET
Request Headers
Host www.lagado.com
User-Agent Keep Out
Accept text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language fr,fr-fr;q=0.8,en-us;q=0.5,en;q=0.3
Accept-Encoding gzip,deflate
Accept-Charset ISO-8859-1,utf-8;q=0.7,*;q=0.7
Pragma no-cache
Cache-Control no-cache, max-age=259200
Connection keep-alive
This Server Host www.lagado.com IP Address 202.3.41.54
Date: Monday 28 Jul 2008 23:57:58 GMT+1000
Please Note: The conclusion that the request did not come via a proxy is based on the absense of the Via, Forwarded, X-Forwarded-For and Client-ip headers. It is still possible that a proxy is handling the request without announcing itself in the recommended way. (see rfc2616 & draft-ietf-http-v10-spec-01 & Squid Configuration Guide & Squid Release Notes 1.1)
Update 08 Feb 2002 by Lagado: Added support for Client-ip header used by some transparent proxies. See more background.
Update 30 Apr 2001 by Lagado: Added Cache-Control: no-cache header to proxy-test responses. This discourages HTTP/1.1 compliant proxies from returning cached test results. Also freshened the document references.