How Can You Check Your ISP is Down?Click on the Run Tab Type “CMD” in Run Type “ipconfiq/all” and Press “Enter” You can see the red box show the Default Gateway from your ISP Link Type “Ping172.16.01” and press “Enter” (172.16.0.1 is not your default ISP it’s an example because you have different number on that place). If you can receive ping like this in picture your ISP is working well may be your system have some problem.Click on the Run Tab Type “CMD” in Run Type “ipconfiq/all” and Press “Enter” You can see the red box show the Default Gateway from your ISP Link Type “Ping172.16.01” and press “Enter” (172.16.0.1 is not your default ISP it’s an example because you have different number on that place). If you can receive ping like this in picture your ISP is working well may be your system have some problem.

 http://trickydocs.com/how-can-you-check-your-isp-is-down.htmlhttp://trickydocs.com/how-can-you-check-your-isp-is-down.html