Blocked web site

I frequent a web site that about 2 weeks ago I am getting a time out error on a windows 7 pro laptop, a windows 8 home laptop and a Win 10 pro desktop using IE, Edge and Chrome.

The one thing in common is Norton 360, is there something in 360 that can block sites?

I can use 2 different Android devices that are on my home wi-fi and they can get to the site, any help would be greatly appreciated.

Thanks for any ideas