abs-cbn.com
According to Alexa.com, the world's most visited website is Google.com.
CEBU!
There is no problem with the website of Polytechnic University of the Philippines. Maybe you just visited the site when it happen to be down or typed the wrong URL, if so, below is the website of PUP:
google.com
the answer is facebook.com
google.co.uk
google.com
www.bundesregierung.de
WikiPedia
Actually Google still is the most visited website in the world. However it has been competing with Facebook lately.