Q: Safari cant connect to server please help!

Hello

I have a a problem please.

The Safari on my OS X Yosemite 13-inch Macbook Air "can't open the page"www.etc" because Safari can't connect to the server "www.etc".

My internet is function correctly. It works on every other device and I have diagnosed my network and it says my connection appears to be working correctly.

I checked my DNS by putting in the google IP address but the google page did not appear. Although when I type in the normal address google.com it opens.

Twitter opens Facebook opens and Google opens. nothing else

I can search on google but after trying to open the website it says safari cant connect to the server.

PLea