Q: Most Websites Are Not Loading On All Browsers

This is likely a Domain Name Server (DNS) problem. If you manually enter anything in the DNS fields for your Wi-Fi setup, it over-rides the settings provided by your Router.

The best way to dig yourself out of ANY configuration problem, is to set it up again from scratch, by using:

System preferences > Network > Wi-Fi > ( Assist me ) > ( Assistant ) ...

Be sure to specify a new, mnemonic-named "Location" bundle, NOT the default. After you have answered the questions, be sure to click (Apply) and close the window to have the changes take effect. Now that bundle of settings can be applied "all at once" when you are again at this location.

When at a different location, create a new "Location" bundle from scratch, so as not to clobber the one that works somewhere else.

Double-check that your date and time is correct, incorrect time will adversely affect secure website performance.

Also, try turning off IPv6 on your wifi router (and laptop) I think this is the culprit as not all websites are IPv6 ready and the ones you've listed all have v6 addresses.

Hold your pointer over the WiFi icon in the menu bar - then press option and click it

Run wireless diagnostics

Can you post what you find?

Leave that Monitor window open in the background. If anything wacky happens to your connection, you will be notified.

Can you post a screen shot or a transcript of

System Preferences > Network > Wi-Fi ?

What do you have for DNS settings in the DNS pane?

Does your IP address start with 169 or 198?

Here is a simple litmus test to see whether your DNS is working. Below are two names for the same web site, Apple.com main page:

http://17.172.224.47

http://apple.com

If the numeric one gets you to apple quickly and easily, but the symbolic one incurs delays, your DNS is not set up correctly.

from:

Non-responsive DNS server or invalid DNS configuration can cause long delay before webpages load - Apple Support

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