Specific site being blocked

The site being blocked is ubuntuforums.org.This started happening last Wednesday(11/20) and when trying to access the site it just times out.I can access it using data on my phone and I can access it with several different PCs using internet at other locations(cox). When looking at notifications in Advanced Security in the app there is nothing there to indicate that this specific site is a threat and is blocked. I've disabled Advanced Security and the issue persists.According to admin at the site my IP address is not being blocked by them so this only leaves Cox as the culprit here.

Edit:disabled firewall on both Ubuntu and Windows PC and the site still is not accessible.

It's mission critical for me to have access to these forums so if anyone in the community here or someone from Cox can shed some light on this issue it would be much appreciated.