"This site can't be reached" when I try to go to simplebooking.it

Thanks again. It appears that your computer is relying on your local router to get its DNS information. DNS can be described as the Internet's phone book. It takes those URLs and converts them to the remote site's actual IP addresses.

Please give the following a try. You will be entering a command into the Terminal app. That command is called "ping." It is used to verify connectivity over a network.

To do so, you will find the Terminal app in the /Applications/Utilities folder on your Mac. Go there, and then, run that app. It should open up in a window that has a command prompt waiting for you to enter commands.

At that prompt, enter: ping -c3 192.168.1.1, and then, press the return key. The results should looks something like the following:

There should be a total of 3 pings going to your router's IP address. A successful ping would result in all 3 ping packets being transmitted & received back, with 0.0% packet loss.

With the Terminal window still open, enter the following command, followed by the return key: ping -c3 simplebooking.it

Here are the results I get when doing so:

Again, notice that the simplebooking.it URL is transformed to the site's IP address: 62.48.39.93. It is pinged 3x with 0.0% packet loss. That, again, would be a successful result.

You don't have to post any screenshots of your results, just let us know if the pings were successful, or not.

To exit the Terminal app, enter: exit, and then, press the return key. You can then just close the Terminal window.

Try the following:

Instead of entering simplebooking.it into the web browser's address field, enter the site's actual IP address instead. For this site it is: 62.48.39.93

Just enter those digits and press return. Does the site appear in the browser now?

Then there may be an issue with either, or both, your Mac's connection to your local network and/or the Internet.

Do you connect your Mac to the network by an Ethernet (wired) or Wi-Fi (wireless) connection?

Ok, thanks. Please provide screenshots of the following:

• System Preferences > Network > Ethernet > Advanced > TCP/IP & DNS tabs

Then take the same screenshots of:

System Preferences > Network > Wi-Fi > Advanced > TCP/IP & DNS tabs

Do you have any issues accessing other websites or only this specific one? If the latter, were you able to access it before? Do you get any HTML error codes (i.e,. 40x, 50x, etc.) when attempting to access this site? Do you use a software firewall on your Mac? Do you access the Internet, via a VPN?

FWIW, I just tried accessing this one, and I was successful doing so?

Once you select a tab. take a screenshot. To add it your your reply post, select the image icon in the post's editor toolbar.

I suggest that you contact your local Apple Store or Apple Authorized Service Provider for assistance. Alternately, you can contact Apple Support directly. To do so, simply select the "Get Support" link in the upper right-hand side of this forum's webpage.

Sorry, that I couldn't help you reach a solution. Good luck!

Thanks, now a screenshot of the DNS tab please.