Why a certain website is freezing on loading the page?

Why a certain website is freezing on loading the page?

I check if the problem is present on a different computer , and from the same router machine. And there is no problem. So the router is not blocked. It must be an IP related blockage. Thank you. Also... I suspected maybe is a special dedicated virus for blocking a website on a specific IP? I scanned my computer with an AV (antivirus) Malwarebytes and nothing is found.