proxy issues

All of the sudden, I can't get to my bank's website. All other websites I use are working just fine. In the searching online that I've done, it appears that I'm having difficulties with proxy configuration. I've gone in and selected auto proxy discovery, but it doesn't seem to help.

This problem getting to the website applies to: Safari, Chrome, Firefox, and Explorer (on my other computer). When I turn WiFi to OFF of my iPhone, I can get to the website just fine on my iphone.