mobileread.com

Hello @sadievan Can you tell us more about what's going on when you try to access that website? Are you seeing any error messages or error codes? 

Have you tried clearing your cache and cookies? If you were to use incognito mode or a different browser are you able to access it?

Not from here (just another Xfinity customer like yourself).

Are you using a Comcast-rented gateway device? Sometimes site's / server's IP addresses get blacklisted when they shouldn't be. As a test and/or a temporary workaround, you could try disabling their Advanced Security feature and see;

https://www.xfinity.com/support/articles/using-xfinity-xfi-advanced-security