I just changed my internet plan with Xfinity and that went fine.  However, I need to access the xfinity.com site to make a few more changes.

When I try to connect to the site, I get the following message.  

Access Denied

You don't have permission to access "http://www.xfinity.com/" on this server.

Reference #18.45c83017.1754670830.5701ef7

https://errors.edgesuite.net/18.45c83017.1754670830.5701ef7

I have only received this message on the xfinity.com site and no others.  I have rebooted the modem numerous times.