All of a sudden all my browsers refuse to connect to certain webpages

[brent1a]

All of a sudden all my browsers refuse to connect to certain webpages.
I can connect to Bing and Macupdate but I'm unable to connect to Google or Facebook. I can connect to some webpages, others are refused. It appears to be at random.
I can succesfully ping all the pages I can't connect too, but the web browsers simply refuse to connect.

My bittorrent client is working fine but I can't connect to my seedbox server.
My MenuTab app for Facebook can't connect, the same as my browser won't connect to FB.

But, all my browsing works perfectly fine on my iPhone that is connected to the same network.

This is really weird behavior that just started....

 

[DoFoT9]

System Preferences->Network->Internet Interface (WiFi or Ethernet)->Advanced->DNS, input 8.8.8.8 and 8.8.4.4 on the left hand column. Apply everything, retry everything.

Does that change it?

Have you attempted to reset the web browser caches?

Have you tried going to the IP addresses of the websites that you ping?

Good spot to start

 

[Mr. Retrofire]

If you have Little Snitch, make sure you use the latest version.