It appears that the web site has to know this and workaround it.
It's sort of like that GoDaddy DNS blackout issue. Could confuse folk that didn't know.
Bob
When accessing certain websites by ATT 3g/4g tethered to a PC a page full of seemingly random characters is returned instead of normal page content. This has been occurring for approximately 2 months and has been reported to ATT and affected websites (Hotwire, New York Daily News, and CNET). ATT states that it's not their problem. Hotwire and NY Daily have made changes to adapt to the situation CNET has not. I submitted a support request to CNET (incident # 120919-000146) on 9-19-2012 but have not recieved a response. I have corresponded with others having these problems on ATT forums and they are much more technically aware than I. This is a link to that discussion. http://forums.att.com/t5/Data-Messaging-Features-Internet/3G-proxy-wnsnet-attws-com-strips-HTTP-response-headers/td-p/3294533 . Please excuse my lack of knowledge and terminology in these areas as I am just a user, not a tech.

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